Abstract

Ghost imaging is an imaging technique in which the image of an object is revealed only in the correlation measurement between two beams of light, whereas the individual measurements contain no imaging information. Here, we experimentally demonstrate storage and retrieval of ghost images in hot atomic rubidium vapor. Since ghost imaging requires (quantum or classical) multimode spatial correlation between two beams of light, our experiment shows that the spatially multimode correlation, a second-order correlation property of light, can indeed be preserved during the storage-retrieval process. Our work, thus, opens up new possibilities for quantum and classical two-photon imaging, all-optical image processing, and quantum communication.

© 2012 OSA

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  1. M. Fleischhauer, A. Imamoglu, and J. P. Marangos, “Electromagnetically induced transparency: optics in coherent media,” Rev. Mod. Phys. 77, 633–673 (2005).
    [CrossRef]
  2. M. Fleischhauer and M. D. Lukin, “Dark-state polaritons in electromagnetically induced transparency,” Phys. Rev. Lett. 84, 5094–5097 (2000).
    [CrossRef] [PubMed]
  3. D. F. Phillips, A. Fleischhauer, A. Mair, R. L. Walsworth, and M. D. Lukin, “Storage of light in atomic vapor,” Phys. Rev. Lett. 86, 783–786 (2001).
    [CrossRef] [PubMed]
  4. M. D. Eisaman, A. André, F. Massou, M. Fleischhauer, A. S. Zibrov, and M. D. Lukin, “Electromagnetically induced transparency with tunable single-photon pulses,” Nature,  438, 837–841 (2005).
    [CrossRef] [PubMed]
  5. K. Honda, D. Akamatsu, M. Arikawa, Y. Yokoi, K. Akiba, S. Nagatsuka, T. Tanimura, A. Furusawa, and M. Kozuma, “Storage and retrieval of a squeezed vacuum,” Phys. Rev. Lett. 100, 093601 (2008).
    [CrossRef] [PubMed]
  6. H. Tanji, S. Ghosh, J. Simon, B. Bloom, and V. Vuleti?, “Heralded single-magnon quantum memory for photon polarization states,” Phys. Rev. Lett. 103, 043601 (2009).
    [CrossRef] [PubMed]
  7. Y.-W. Cho and Y.-H. Kim, “Atomic vapor quantum memory for a photonic polarization qubit,” Opt. Express 18, 25786 (2010).
    [CrossRef] [PubMed]
  8. Y.-W. Cho and Y.-H. Kim, “Storage and retrieval of thermal light in warm atomic vapor,” Phys. Rev. A 82, 033830 (2010).
    [CrossRef]
  9. A. L. Alexander, J. J. Longdell, M. J. Sellars, and N. B. Manson, “Photon echoes produced by switching electric fields,” Phys. Rev. Lett. 96, 043602 (2006).
    [CrossRef] [PubMed]
  10. M. U. Staudt, S. R. Hastings-Simon, M. Nilsson, M. Afzelius, V. Scarani, R. Ricken, H. Suche, W. Sohler, W. Tittel, and N. Gisin, “Fidelity of an optical memory based on stimulated photon echoes,” Phys. Rev. Lett. 98, 113601 (2007).
    [CrossRef] [PubMed]
  11. M. P. Hedges, J. J. Longdell, Y. Li, and M. J. Sellars, “Efficient quantum memory for light,” Nature 465, 1052–1056 (2010).
    [CrossRef] [PubMed]
  12. C. Clausen, I. Usmani, F. Bussires, N. Sangouard, M. Afzelius, H. de Riedmatten, and N. Gisin, “Quantum storage of photonic entanglement in a crystal,” Nature 469, 508–511 (2011).
    [CrossRef] [PubMed]
  13. M. Hosseini, B. M. Sparkes, G. Campbell, P. K. Lam, and B. C. Buchler, “High efficiency coherent optical memory with warm rubidium vapour,” Nat. Commun. 2, 174 (2011).
    [CrossRef] [PubMed]
  14. K. F. Reim, J. Nunn, V. O. Lorenz, B. J. Sussman, K. C. Lee, N. K. Langford, D. Jaksch, and I. A. Walmsley, “Towards high-speed optical quantum memories,” Nat. Photonics 4, 218–221 (2010).
    [CrossRef]
  15. D. V. Vasilyev, I. V. Sokolov, and E. S. Polzik, “Quantum memory for images: a quantum hologram,” Phys. Rev. A. 77, 020302(R) (2008).
    [CrossRef]
  16. P. K. Vudyasetu, R. M. Camacho, and J. C. Howell, “Storage and retrieval of multimode transverse images in hot atomic rubidium vapor,” Phys. Rev. Lett. 100, 123903 (2008).
    [CrossRef] [PubMed]
  17. M. Shuker, O. Firstenberg, R. Pugatch, A. Ron, and N. Davison, “Storing images in warm atomic vapor,” Phys. Rev. Lett. 100, 223601 (2008).
    [CrossRef] [PubMed]
  18. G. Heinze, A. Rudolf, F. Beil, and T. Halfmann, “Storage of images in atomic coherences in a rare-earth-ion-doped solid,” Phys. Rev. A 81, 011401(R) (2010).
  19. T. B. Pittman, Y. H. Shih, D. V. Strekalov, and A. V. Sergienko, “Optical imaging by means of two-photon quantum entanglement,” Phys. Rev. A 52, R3429 (1995).
    [CrossRef] [PubMed]
  20. F. Ferri, D. Magatti, A. Gatti, M. Bache, E. Brambilla, and L. A. Lugiato, “High-resolution ghost image and ghost diffraction experiments with thermal light,” Phys. Rev. Lett. 94, 183602 (2005).
    [CrossRef] [PubMed]
  21. A. Valencia, G. Scarcelli, M. D’Angelo, and Y. Shih, “Two-photon imaging with thermal light,” Phys. Rev. Lett. 94, 063601 (2005).
    [CrossRef] [PubMed]
  22. G. Brida, M. Genovese, and I. R. Berchera, “Experimental realization of sub-shot-noise quantum imaging,” Nat. Photonics 4, 227–230 (2010).
    [CrossRef]
  23. R. E. Meyers, K. S. Deacon, and Y. Shih, “Ghost-imaging experiment by measuring reflected photons,” Phys. Rev. A 77, 041801(R) (2008).
    [CrossRef]
  24. J. Cheng and S. Han, “Incoherent coincidence imaging and its applicability in X-ray diffraction,” Phys. Rev. Lett. 92, 093903 (2004).
    [CrossRef] [PubMed]
  25. P. Clemente, V. Durán, V. Torres-Company, E. Tajahuerce, and J. Lancis, “Optical encryption based on computational ghost imaging,” Opt. Lett. 35, 2391–2393 (2010).
    [CrossRef] [PubMed]
  26. V. Boyer, A. M. Marino, R. C. Pooser, and P. D. Lett, “Entangled images from four-wave mixing,” Science 321, 544–547 (2008).
    [CrossRef] [PubMed]
  27. G. Scarcelli, V. Berardi, and Y. Shih, “Can two-photon correlation of chaotic light be considered as correlation of intensity fluctuations?,” Phys. Rev. Lett. 96, 063602 (2006).
    [CrossRef] [PubMed]
  28. A. Gatti, E. Brambilla, M. Bache, and A. Lugiato, “Correlated imaging, quantum and classical,” Phys. Rev. A 70, 013802 (2004).
    [CrossRef]
  29. The cross correlation for the ghost imaging is calculated by the following equation, G(r?)=?iN?Ii?Ji(r?), where ?Ii=Ii?1N?iNIi and ?Ji(r?)=Ji(r?)?1N?iNJi(r?) are fluctuations of photodetector and CCD output signals, respectively.
  30. A delay/pulse generator (SRS, DG535) provides the synchronization pulses for the CCD (JAI, CM-030-GE), the digitizer (NI, PCI-5114), and the two acousto-optic modulators used in the experiment. Each “measurement” is then repeated at 1.5 Hz.
  31. K. W. C. Chan, M. N. O’Sullivan, and R. W. Boyd, “Optimization of thermal ghost imaging: high-order correlation vs. background subtraction,” Opt. Express 18, 5562–5573 (2010).
    [CrossRef] [PubMed]
  32. K. W. C. Chan, M. N. O’Sullivan, and R. W. Boyd, “High-order thermal ghost imaging,” Opt. Lett. 34, 3343–3345 (2009).
    [CrossRef] [PubMed]
  33. B. I. Erkmen and J. H. Shapiro, “Signal-to-noise ratio of Gussian-state ghost imaging,” Phys. Rev. A 79, 023833 (2009).
    [CrossRef]
  34. G. Brida, M. V. Chekhova, G. A. Fornaro, M. Genovese, E. D. Lopaeva, and I. Ruo Berchera, “Systematic analysis of signal-to-noise ratio in bipartite ghost imaging with classical and quantum light,” Phys. Rev. A 83, 063807 (2011).
    [CrossRef]
  35. F. Ferri, D. Magatti, L. A. Lugiato, and A. Gatti, “Differential ghost imaging,” Phys. Rev. Lett. 104, 253603 (2010).
    [CrossRef] [PubMed]
  36. L. Zhao, T. Wang, Y. Xiao, and S. F. Yelin, “Image storage in hot vapors,” Phys. Rev. A 77, 041802(R) (2008).
    [CrossRef]
  37. A. Gatti, M. Bache, D. Magatti, E. Brambilla, F. Ferri, and L. A. Lugiato, “Coherent imaging with pseudo-thermal incoherent light,” J. of Mod. Opt. 53, 739–760 (2006).
    [CrossRef]

2011 (3)

C. Clausen, I. Usmani, F. Bussires, N. Sangouard, M. Afzelius, H. de Riedmatten, and N. Gisin, “Quantum storage of photonic entanglement in a crystal,” Nature 469, 508–511 (2011).
[CrossRef] [PubMed]

M. Hosseini, B. M. Sparkes, G. Campbell, P. K. Lam, and B. C. Buchler, “High efficiency coherent optical memory with warm rubidium vapour,” Nat. Commun. 2, 174 (2011).
[CrossRef] [PubMed]

G. Brida, M. V. Chekhova, G. A. Fornaro, M. Genovese, E. D. Lopaeva, and I. Ruo Berchera, “Systematic analysis of signal-to-noise ratio in bipartite ghost imaging with classical and quantum light,” Phys. Rev. A 83, 063807 (2011).
[CrossRef]

2010 (9)

F. Ferri, D. Magatti, L. A. Lugiato, and A. Gatti, “Differential ghost imaging,” Phys. Rev. Lett. 104, 253603 (2010).
[CrossRef] [PubMed]

K. W. C. Chan, M. N. O’Sullivan, and R. W. Boyd, “Optimization of thermal ghost imaging: high-order correlation vs. background subtraction,” Opt. Express 18, 5562–5573 (2010).
[CrossRef] [PubMed]

P. Clemente, V. Durán, V. Torres-Company, E. Tajahuerce, and J. Lancis, “Optical encryption based on computational ghost imaging,” Opt. Lett. 35, 2391–2393 (2010).
[CrossRef] [PubMed]

Y.-W. Cho and Y.-H. Kim, “Atomic vapor quantum memory for a photonic polarization qubit,” Opt. Express 18, 25786 (2010).
[CrossRef] [PubMed]

K. F. Reim, J. Nunn, V. O. Lorenz, B. J. Sussman, K. C. Lee, N. K. Langford, D. Jaksch, and I. A. Walmsley, “Towards high-speed optical quantum memories,” Nat. Photonics 4, 218–221 (2010).
[CrossRef]

Y.-W. Cho and Y.-H. Kim, “Storage and retrieval of thermal light in warm atomic vapor,” Phys. Rev. A 82, 033830 (2010).
[CrossRef]

M. P. Hedges, J. J. Longdell, Y. Li, and M. J. Sellars, “Efficient quantum memory for light,” Nature 465, 1052–1056 (2010).
[CrossRef] [PubMed]

G. Heinze, A. Rudolf, F. Beil, and T. Halfmann, “Storage of images in atomic coherences in a rare-earth-ion-doped solid,” Phys. Rev. A 81, 011401(R) (2010).

G. Brida, M. Genovese, and I. R. Berchera, “Experimental realization of sub-shot-noise quantum imaging,” Nat. Photonics 4, 227–230 (2010).
[CrossRef]

2009 (3)

K. W. C. Chan, M. N. O’Sullivan, and R. W. Boyd, “High-order thermal ghost imaging,” Opt. Lett. 34, 3343–3345 (2009).
[CrossRef] [PubMed]

H. Tanji, S. Ghosh, J. Simon, B. Bloom, and V. Vuleti?, “Heralded single-magnon quantum memory for photon polarization states,” Phys. Rev. Lett. 103, 043601 (2009).
[CrossRef] [PubMed]

B. I. Erkmen and J. H. Shapiro, “Signal-to-noise ratio of Gussian-state ghost imaging,” Phys. Rev. A 79, 023833 (2009).
[CrossRef]

2008 (7)

K. Honda, D. Akamatsu, M. Arikawa, Y. Yokoi, K. Akiba, S. Nagatsuka, T. Tanimura, A. Furusawa, and M. Kozuma, “Storage and retrieval of a squeezed vacuum,” Phys. Rev. Lett. 100, 093601 (2008).
[CrossRef] [PubMed]

V. Boyer, A. M. Marino, R. C. Pooser, and P. D. Lett, “Entangled images from four-wave mixing,” Science 321, 544–547 (2008).
[CrossRef] [PubMed]

L. Zhao, T. Wang, Y. Xiao, and S. F. Yelin, “Image storage in hot vapors,” Phys. Rev. A 77, 041802(R) (2008).
[CrossRef]

R. E. Meyers, K. S. Deacon, and Y. Shih, “Ghost-imaging experiment by measuring reflected photons,” Phys. Rev. A 77, 041801(R) (2008).
[CrossRef]

D. V. Vasilyev, I. V. Sokolov, and E. S. Polzik, “Quantum memory for images: a quantum hologram,” Phys. Rev. A. 77, 020302(R) (2008).
[CrossRef]

P. K. Vudyasetu, R. M. Camacho, and J. C. Howell, “Storage and retrieval of multimode transverse images in hot atomic rubidium vapor,” Phys. Rev. Lett. 100, 123903 (2008).
[CrossRef] [PubMed]

M. Shuker, O. Firstenberg, R. Pugatch, A. Ron, and N. Davison, “Storing images in warm atomic vapor,” Phys. Rev. Lett. 100, 223601 (2008).
[CrossRef] [PubMed]

2007 (1)

M. U. Staudt, S. R. Hastings-Simon, M. Nilsson, M. Afzelius, V. Scarani, R. Ricken, H. Suche, W. Sohler, W. Tittel, and N. Gisin, “Fidelity of an optical memory based on stimulated photon echoes,” Phys. Rev. Lett. 98, 113601 (2007).
[CrossRef] [PubMed]

2006 (3)

A. L. Alexander, J. J. Longdell, M. J. Sellars, and N. B. Manson, “Photon echoes produced by switching electric fields,” Phys. Rev. Lett. 96, 043602 (2006).
[CrossRef] [PubMed]

A. Gatti, M. Bache, D. Magatti, E. Brambilla, F. Ferri, and L. A. Lugiato, “Coherent imaging with pseudo-thermal incoherent light,” J. of Mod. Opt. 53, 739–760 (2006).
[CrossRef]

G. Scarcelli, V. Berardi, and Y. Shih, “Can two-photon correlation of chaotic light be considered as correlation of intensity fluctuations?,” Phys. Rev. Lett. 96, 063602 (2006).
[CrossRef] [PubMed]

2005 (4)

M. D. Eisaman, A. André, F. Massou, M. Fleischhauer, A. S. Zibrov, and M. D. Lukin, “Electromagnetically induced transparency with tunable single-photon pulses,” Nature,  438, 837–841 (2005).
[CrossRef] [PubMed]

M. Fleischhauer, A. Imamoglu, and J. P. Marangos, “Electromagnetically induced transparency: optics in coherent media,” Rev. Mod. Phys. 77, 633–673 (2005).
[CrossRef]

F. Ferri, D. Magatti, A. Gatti, M. Bache, E. Brambilla, and L. A. Lugiato, “High-resolution ghost image and ghost diffraction experiments with thermal light,” Phys. Rev. Lett. 94, 183602 (2005).
[CrossRef] [PubMed]

A. Valencia, G. Scarcelli, M. D’Angelo, and Y. Shih, “Two-photon imaging with thermal light,” Phys. Rev. Lett. 94, 063601 (2005).
[CrossRef] [PubMed]

2004 (2)

J. Cheng and S. Han, “Incoherent coincidence imaging and its applicability in X-ray diffraction,” Phys. Rev. Lett. 92, 093903 (2004).
[CrossRef] [PubMed]

A. Gatti, E. Brambilla, M. Bache, and A. Lugiato, “Correlated imaging, quantum and classical,” Phys. Rev. A 70, 013802 (2004).
[CrossRef]

2001 (1)

D. F. Phillips, A. Fleischhauer, A. Mair, R. L. Walsworth, and M. D. Lukin, “Storage of light in atomic vapor,” Phys. Rev. Lett. 86, 783–786 (2001).
[CrossRef] [PubMed]

2000 (1)

M. Fleischhauer and M. D. Lukin, “Dark-state polaritons in electromagnetically induced transparency,” Phys. Rev. Lett. 84, 5094–5097 (2000).
[CrossRef] [PubMed]

1995 (1)

T. B. Pittman, Y. H. Shih, D. V. Strekalov, and A. V. Sergienko, “Optical imaging by means of two-photon quantum entanglement,” Phys. Rev. A 52, R3429 (1995).
[CrossRef] [PubMed]

Afzelius, M.

C. Clausen, I. Usmani, F. Bussires, N. Sangouard, M. Afzelius, H. de Riedmatten, and N. Gisin, “Quantum storage of photonic entanglement in a crystal,” Nature 469, 508–511 (2011).
[CrossRef] [PubMed]

M. U. Staudt, S. R. Hastings-Simon, M. Nilsson, M. Afzelius, V. Scarani, R. Ricken, H. Suche, W. Sohler, W. Tittel, and N. Gisin, “Fidelity of an optical memory based on stimulated photon echoes,” Phys. Rev. Lett. 98, 113601 (2007).
[CrossRef] [PubMed]

Akamatsu, D.

K. Honda, D. Akamatsu, M. Arikawa, Y. Yokoi, K. Akiba, S. Nagatsuka, T. Tanimura, A. Furusawa, and M. Kozuma, “Storage and retrieval of a squeezed vacuum,” Phys. Rev. Lett. 100, 093601 (2008).
[CrossRef] [PubMed]

Akiba, K.

K. Honda, D. Akamatsu, M. Arikawa, Y. Yokoi, K. Akiba, S. Nagatsuka, T. Tanimura, A. Furusawa, and M. Kozuma, “Storage and retrieval of a squeezed vacuum,” Phys. Rev. Lett. 100, 093601 (2008).
[CrossRef] [PubMed]

Alexander, A. L.

A. L. Alexander, J. J. Longdell, M. J. Sellars, and N. B. Manson, “Photon echoes produced by switching electric fields,” Phys. Rev. Lett. 96, 043602 (2006).
[CrossRef] [PubMed]

André, A.

M. D. Eisaman, A. André, F. Massou, M. Fleischhauer, A. S. Zibrov, and M. D. Lukin, “Electromagnetically induced transparency with tunable single-photon pulses,” Nature,  438, 837–841 (2005).
[CrossRef] [PubMed]

Arikawa, M.

K. Honda, D. Akamatsu, M. Arikawa, Y. Yokoi, K. Akiba, S. Nagatsuka, T. Tanimura, A. Furusawa, and M. Kozuma, “Storage and retrieval of a squeezed vacuum,” Phys. Rev. Lett. 100, 093601 (2008).
[CrossRef] [PubMed]

Bache, M.

A. Gatti, M. Bache, D. Magatti, E. Brambilla, F. Ferri, and L. A. Lugiato, “Coherent imaging with pseudo-thermal incoherent light,” J. of Mod. Opt. 53, 739–760 (2006).
[CrossRef]

F. Ferri, D. Magatti, A. Gatti, M. Bache, E. Brambilla, and L. A. Lugiato, “High-resolution ghost image and ghost diffraction experiments with thermal light,” Phys. Rev. Lett. 94, 183602 (2005).
[CrossRef] [PubMed]

A. Gatti, E. Brambilla, M. Bache, and A. Lugiato, “Correlated imaging, quantum and classical,” Phys. Rev. A 70, 013802 (2004).
[CrossRef]

Beil, F.

G. Heinze, A. Rudolf, F. Beil, and T. Halfmann, “Storage of images in atomic coherences in a rare-earth-ion-doped solid,” Phys. Rev. A 81, 011401(R) (2010).

Berardi, V.

G. Scarcelli, V. Berardi, and Y. Shih, “Can two-photon correlation of chaotic light be considered as correlation of intensity fluctuations?,” Phys. Rev. Lett. 96, 063602 (2006).
[CrossRef] [PubMed]

Berchera, I. R.

G. Brida, M. Genovese, and I. R. Berchera, “Experimental realization of sub-shot-noise quantum imaging,” Nat. Photonics 4, 227–230 (2010).
[CrossRef]

Bloom, B.

H. Tanji, S. Ghosh, J. Simon, B. Bloom, and V. Vuleti?, “Heralded single-magnon quantum memory for photon polarization states,” Phys. Rev. Lett. 103, 043601 (2009).
[CrossRef] [PubMed]

Boyd, R. W.

Boyer, V.

V. Boyer, A. M. Marino, R. C. Pooser, and P. D. Lett, “Entangled images from four-wave mixing,” Science 321, 544–547 (2008).
[CrossRef] [PubMed]

Brambilla, E.

A. Gatti, M. Bache, D. Magatti, E. Brambilla, F. Ferri, and L. A. Lugiato, “Coherent imaging with pseudo-thermal incoherent light,” J. of Mod. Opt. 53, 739–760 (2006).
[CrossRef]

F. Ferri, D. Magatti, A. Gatti, M. Bache, E. Brambilla, and L. A. Lugiato, “High-resolution ghost image and ghost diffraction experiments with thermal light,” Phys. Rev. Lett. 94, 183602 (2005).
[CrossRef] [PubMed]

A. Gatti, E. Brambilla, M. Bache, and A. Lugiato, “Correlated imaging, quantum and classical,” Phys. Rev. A 70, 013802 (2004).
[CrossRef]

Brida, G.

G. Brida, M. V. Chekhova, G. A. Fornaro, M. Genovese, E. D. Lopaeva, and I. Ruo Berchera, “Systematic analysis of signal-to-noise ratio in bipartite ghost imaging with classical and quantum light,” Phys. Rev. A 83, 063807 (2011).
[CrossRef]

G. Brida, M. Genovese, and I. R. Berchera, “Experimental realization of sub-shot-noise quantum imaging,” Nat. Photonics 4, 227–230 (2010).
[CrossRef]

Buchler, B. C.

M. Hosseini, B. M. Sparkes, G. Campbell, P. K. Lam, and B. C. Buchler, “High efficiency coherent optical memory with warm rubidium vapour,” Nat. Commun. 2, 174 (2011).
[CrossRef] [PubMed]

Bussires, F.

C. Clausen, I. Usmani, F. Bussires, N. Sangouard, M. Afzelius, H. de Riedmatten, and N. Gisin, “Quantum storage of photonic entanglement in a crystal,” Nature 469, 508–511 (2011).
[CrossRef] [PubMed]

Camacho, R. M.

P. K. Vudyasetu, R. M. Camacho, and J. C. Howell, “Storage and retrieval of multimode transverse images in hot atomic rubidium vapor,” Phys. Rev. Lett. 100, 123903 (2008).
[CrossRef] [PubMed]

Campbell, G.

M. Hosseini, B. M. Sparkes, G. Campbell, P. K. Lam, and B. C. Buchler, “High efficiency coherent optical memory with warm rubidium vapour,” Nat. Commun. 2, 174 (2011).
[CrossRef] [PubMed]

Chan, K. W. C.

Chekhova, M. V.

G. Brida, M. V. Chekhova, G. A. Fornaro, M. Genovese, E. D. Lopaeva, and I. Ruo Berchera, “Systematic analysis of signal-to-noise ratio in bipartite ghost imaging with classical and quantum light,” Phys. Rev. A 83, 063807 (2011).
[CrossRef]

Cheng, J.

J. Cheng and S. Han, “Incoherent coincidence imaging and its applicability in X-ray diffraction,” Phys. Rev. Lett. 92, 093903 (2004).
[CrossRef] [PubMed]

Cho, Y.-W.

Y.-W. Cho and Y.-H. Kim, “Atomic vapor quantum memory for a photonic polarization qubit,” Opt. Express 18, 25786 (2010).
[CrossRef] [PubMed]

Y.-W. Cho and Y.-H. Kim, “Storage and retrieval of thermal light in warm atomic vapor,” Phys. Rev. A 82, 033830 (2010).
[CrossRef]

Clausen, C.

C. Clausen, I. Usmani, F. Bussires, N. Sangouard, M. Afzelius, H. de Riedmatten, and N. Gisin, “Quantum storage of photonic entanglement in a crystal,” Nature 469, 508–511 (2011).
[CrossRef] [PubMed]

Clemente, P.

D’Angelo, M.

A. Valencia, G. Scarcelli, M. D’Angelo, and Y. Shih, “Two-photon imaging with thermal light,” Phys. Rev. Lett. 94, 063601 (2005).
[CrossRef] [PubMed]

Davison, N.

M. Shuker, O. Firstenberg, R. Pugatch, A. Ron, and N. Davison, “Storing images in warm atomic vapor,” Phys. Rev. Lett. 100, 223601 (2008).
[CrossRef] [PubMed]

de Riedmatten, H.

C. Clausen, I. Usmani, F. Bussires, N. Sangouard, M. Afzelius, H. de Riedmatten, and N. Gisin, “Quantum storage of photonic entanglement in a crystal,” Nature 469, 508–511 (2011).
[CrossRef] [PubMed]

Deacon, K. S.

R. E. Meyers, K. S. Deacon, and Y. Shih, “Ghost-imaging experiment by measuring reflected photons,” Phys. Rev. A 77, 041801(R) (2008).
[CrossRef]

Durán, V.

Eisaman, M. D.

M. D. Eisaman, A. André, F. Massou, M. Fleischhauer, A. S. Zibrov, and M. D. Lukin, “Electromagnetically induced transparency with tunable single-photon pulses,” Nature,  438, 837–841 (2005).
[CrossRef] [PubMed]

Erkmen, B. I.

B. I. Erkmen and J. H. Shapiro, “Signal-to-noise ratio of Gussian-state ghost imaging,” Phys. Rev. A 79, 023833 (2009).
[CrossRef]

Ferri, F.

F. Ferri, D. Magatti, L. A. Lugiato, and A. Gatti, “Differential ghost imaging,” Phys. Rev. Lett. 104, 253603 (2010).
[CrossRef] [PubMed]

A. Gatti, M. Bache, D. Magatti, E. Brambilla, F. Ferri, and L. A. Lugiato, “Coherent imaging with pseudo-thermal incoherent light,” J. of Mod. Opt. 53, 739–760 (2006).
[CrossRef]

F. Ferri, D. Magatti, A. Gatti, M. Bache, E. Brambilla, and L. A. Lugiato, “High-resolution ghost image and ghost diffraction experiments with thermal light,” Phys. Rev. Lett. 94, 183602 (2005).
[CrossRef] [PubMed]

Firstenberg, O.

M. Shuker, O. Firstenberg, R. Pugatch, A. Ron, and N. Davison, “Storing images in warm atomic vapor,” Phys. Rev. Lett. 100, 223601 (2008).
[CrossRef] [PubMed]

Fleischhauer, A.

D. F. Phillips, A. Fleischhauer, A. Mair, R. L. Walsworth, and M. D. Lukin, “Storage of light in atomic vapor,” Phys. Rev. Lett. 86, 783–786 (2001).
[CrossRef] [PubMed]

Fleischhauer, M.

M. Fleischhauer, A. Imamoglu, and J. P. Marangos, “Electromagnetically induced transparency: optics in coherent media,” Rev. Mod. Phys. 77, 633–673 (2005).
[CrossRef]

M. D. Eisaman, A. André, F. Massou, M. Fleischhauer, A. S. Zibrov, and M. D. Lukin, “Electromagnetically induced transparency with tunable single-photon pulses,” Nature,  438, 837–841 (2005).
[CrossRef] [PubMed]

M. Fleischhauer and M. D. Lukin, “Dark-state polaritons in electromagnetically induced transparency,” Phys. Rev. Lett. 84, 5094–5097 (2000).
[CrossRef] [PubMed]

Fornaro, G. A.

G. Brida, M. V. Chekhova, G. A. Fornaro, M. Genovese, E. D. Lopaeva, and I. Ruo Berchera, “Systematic analysis of signal-to-noise ratio in bipartite ghost imaging with classical and quantum light,” Phys. Rev. A 83, 063807 (2011).
[CrossRef]

Furusawa, A.

K. Honda, D. Akamatsu, M. Arikawa, Y. Yokoi, K. Akiba, S. Nagatsuka, T. Tanimura, A. Furusawa, and M. Kozuma, “Storage and retrieval of a squeezed vacuum,” Phys. Rev. Lett. 100, 093601 (2008).
[CrossRef] [PubMed]

Gatti, A.

F. Ferri, D. Magatti, L. A. Lugiato, and A. Gatti, “Differential ghost imaging,” Phys. Rev. Lett. 104, 253603 (2010).
[CrossRef] [PubMed]

A. Gatti, M. Bache, D. Magatti, E. Brambilla, F. Ferri, and L. A. Lugiato, “Coherent imaging with pseudo-thermal incoherent light,” J. of Mod. Opt. 53, 739–760 (2006).
[CrossRef]

F. Ferri, D. Magatti, A. Gatti, M. Bache, E. Brambilla, and L. A. Lugiato, “High-resolution ghost image and ghost diffraction experiments with thermal light,” Phys. Rev. Lett. 94, 183602 (2005).
[CrossRef] [PubMed]

A. Gatti, E. Brambilla, M. Bache, and A. Lugiato, “Correlated imaging, quantum and classical,” Phys. Rev. A 70, 013802 (2004).
[CrossRef]

Genovese, M.

G. Brida, M. V. Chekhova, G. A. Fornaro, M. Genovese, E. D. Lopaeva, and I. Ruo Berchera, “Systematic analysis of signal-to-noise ratio in bipartite ghost imaging with classical and quantum light,” Phys. Rev. A 83, 063807 (2011).
[CrossRef]

G. Brida, M. Genovese, and I. R. Berchera, “Experimental realization of sub-shot-noise quantum imaging,” Nat. Photonics 4, 227–230 (2010).
[CrossRef]

Ghosh, S.

H. Tanji, S. Ghosh, J. Simon, B. Bloom, and V. Vuleti?, “Heralded single-magnon quantum memory for photon polarization states,” Phys. Rev. Lett. 103, 043601 (2009).
[CrossRef] [PubMed]

Gisin, N.

C. Clausen, I. Usmani, F. Bussires, N. Sangouard, M. Afzelius, H. de Riedmatten, and N. Gisin, “Quantum storage of photonic entanglement in a crystal,” Nature 469, 508–511 (2011).
[CrossRef] [PubMed]

M. U. Staudt, S. R. Hastings-Simon, M. Nilsson, M. Afzelius, V. Scarani, R. Ricken, H. Suche, W. Sohler, W. Tittel, and N. Gisin, “Fidelity of an optical memory based on stimulated photon echoes,” Phys. Rev. Lett. 98, 113601 (2007).
[CrossRef] [PubMed]

Halfmann, T.

G. Heinze, A. Rudolf, F. Beil, and T. Halfmann, “Storage of images in atomic coherences in a rare-earth-ion-doped solid,” Phys. Rev. A 81, 011401(R) (2010).

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J. Cheng and S. Han, “Incoherent coincidence imaging and its applicability in X-ray diffraction,” Phys. Rev. Lett. 92, 093903 (2004).
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M. U. Staudt, S. R. Hastings-Simon, M. Nilsson, M. Afzelius, V. Scarani, R. Ricken, H. Suche, W. Sohler, W. Tittel, and N. Gisin, “Fidelity of an optical memory based on stimulated photon echoes,” Phys. Rev. Lett. 98, 113601 (2007).
[CrossRef] [PubMed]

Hedges, M. P.

M. P. Hedges, J. J. Longdell, Y. Li, and M. J. Sellars, “Efficient quantum memory for light,” Nature 465, 1052–1056 (2010).
[CrossRef] [PubMed]

Heinze, G.

G. Heinze, A. Rudolf, F. Beil, and T. Halfmann, “Storage of images in atomic coherences in a rare-earth-ion-doped solid,” Phys. Rev. A 81, 011401(R) (2010).

Honda, K.

K. Honda, D. Akamatsu, M. Arikawa, Y. Yokoi, K. Akiba, S. Nagatsuka, T. Tanimura, A. Furusawa, and M. Kozuma, “Storage and retrieval of a squeezed vacuum,” Phys. Rev. Lett. 100, 093601 (2008).
[CrossRef] [PubMed]

Hosseini, M.

M. Hosseini, B. M. Sparkes, G. Campbell, P. K. Lam, and B. C. Buchler, “High efficiency coherent optical memory with warm rubidium vapour,” Nat. Commun. 2, 174 (2011).
[CrossRef] [PubMed]

Howell, J. C.

P. K. Vudyasetu, R. M. Camacho, and J. C. Howell, “Storage and retrieval of multimode transverse images in hot atomic rubidium vapor,” Phys. Rev. Lett. 100, 123903 (2008).
[CrossRef] [PubMed]

Imamoglu, A.

M. Fleischhauer, A. Imamoglu, and J. P. Marangos, “Electromagnetically induced transparency: optics in coherent media,” Rev. Mod. Phys. 77, 633–673 (2005).
[CrossRef]

Jaksch, D.

K. F. Reim, J. Nunn, V. O. Lorenz, B. J. Sussman, K. C. Lee, N. K. Langford, D. Jaksch, and I. A. Walmsley, “Towards high-speed optical quantum memories,” Nat. Photonics 4, 218–221 (2010).
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Kim, Y.-H.

Y.-W. Cho and Y.-H. Kim, “Storage and retrieval of thermal light in warm atomic vapor,” Phys. Rev. A 82, 033830 (2010).
[CrossRef]

Y.-W. Cho and Y.-H. Kim, “Atomic vapor quantum memory for a photonic polarization qubit,” Opt. Express 18, 25786 (2010).
[CrossRef] [PubMed]

Kozuma, M.

K. Honda, D. Akamatsu, M. Arikawa, Y. Yokoi, K. Akiba, S. Nagatsuka, T. Tanimura, A. Furusawa, and M. Kozuma, “Storage and retrieval of a squeezed vacuum,” Phys. Rev. Lett. 100, 093601 (2008).
[CrossRef] [PubMed]

Lam, P. K.

M. Hosseini, B. M. Sparkes, G. Campbell, P. K. Lam, and B. C. Buchler, “High efficiency coherent optical memory with warm rubidium vapour,” Nat. Commun. 2, 174 (2011).
[CrossRef] [PubMed]

Lancis, J.

Langford, N. K.

K. F. Reim, J. Nunn, V. O. Lorenz, B. J. Sussman, K. C. Lee, N. K. Langford, D. Jaksch, and I. A. Walmsley, “Towards high-speed optical quantum memories,” Nat. Photonics 4, 218–221 (2010).
[CrossRef]

Lee, K. C.

K. F. Reim, J. Nunn, V. O. Lorenz, B. J. Sussman, K. C. Lee, N. K. Langford, D. Jaksch, and I. A. Walmsley, “Towards high-speed optical quantum memories,” Nat. Photonics 4, 218–221 (2010).
[CrossRef]

Lett, P. D.

V. Boyer, A. M. Marino, R. C. Pooser, and P. D. Lett, “Entangled images from four-wave mixing,” Science 321, 544–547 (2008).
[CrossRef] [PubMed]

Li, Y.

M. P. Hedges, J. J. Longdell, Y. Li, and M. J. Sellars, “Efficient quantum memory for light,” Nature 465, 1052–1056 (2010).
[CrossRef] [PubMed]

Longdell, J. J.

M. P. Hedges, J. J. Longdell, Y. Li, and M. J. Sellars, “Efficient quantum memory for light,” Nature 465, 1052–1056 (2010).
[CrossRef] [PubMed]

A. L. Alexander, J. J. Longdell, M. J. Sellars, and N. B. Manson, “Photon echoes produced by switching electric fields,” Phys. Rev. Lett. 96, 043602 (2006).
[CrossRef] [PubMed]

Lopaeva, E. D.

G. Brida, M. V. Chekhova, G. A. Fornaro, M. Genovese, E. D. Lopaeva, and I. Ruo Berchera, “Systematic analysis of signal-to-noise ratio in bipartite ghost imaging with classical and quantum light,” Phys. Rev. A 83, 063807 (2011).
[CrossRef]

Lorenz, V. O.

K. F. Reim, J. Nunn, V. O. Lorenz, B. J. Sussman, K. C. Lee, N. K. Langford, D. Jaksch, and I. A. Walmsley, “Towards high-speed optical quantum memories,” Nat. Photonics 4, 218–221 (2010).
[CrossRef]

Lugiato, A.

A. Gatti, E. Brambilla, M. Bache, and A. Lugiato, “Correlated imaging, quantum and classical,” Phys. Rev. A 70, 013802 (2004).
[CrossRef]

Lugiato, L. A.

F. Ferri, D. Magatti, L. A. Lugiato, and A. Gatti, “Differential ghost imaging,” Phys. Rev. Lett. 104, 253603 (2010).
[CrossRef] [PubMed]

A. Gatti, M. Bache, D. Magatti, E. Brambilla, F. Ferri, and L. A. Lugiato, “Coherent imaging with pseudo-thermal incoherent light,” J. of Mod. Opt. 53, 739–760 (2006).
[CrossRef]

F. Ferri, D. Magatti, A. Gatti, M. Bache, E. Brambilla, and L. A. Lugiato, “High-resolution ghost image and ghost diffraction experiments with thermal light,” Phys. Rev. Lett. 94, 183602 (2005).
[CrossRef] [PubMed]

Lukin, M. D.

M. D. Eisaman, A. André, F. Massou, M. Fleischhauer, A. S. Zibrov, and M. D. Lukin, “Electromagnetically induced transparency with tunable single-photon pulses,” Nature,  438, 837–841 (2005).
[CrossRef] [PubMed]

D. F. Phillips, A. Fleischhauer, A. Mair, R. L. Walsworth, and M. D. Lukin, “Storage of light in atomic vapor,” Phys. Rev. Lett. 86, 783–786 (2001).
[CrossRef] [PubMed]

M. Fleischhauer and M. D. Lukin, “Dark-state polaritons in electromagnetically induced transparency,” Phys. Rev. Lett. 84, 5094–5097 (2000).
[CrossRef] [PubMed]

Magatti, D.

F. Ferri, D. Magatti, L. A. Lugiato, and A. Gatti, “Differential ghost imaging,” Phys. Rev. Lett. 104, 253603 (2010).
[CrossRef] [PubMed]

A. Gatti, M. Bache, D. Magatti, E. Brambilla, F. Ferri, and L. A. Lugiato, “Coherent imaging with pseudo-thermal incoherent light,” J. of Mod. Opt. 53, 739–760 (2006).
[CrossRef]

F. Ferri, D. Magatti, A. Gatti, M. Bache, E. Brambilla, and L. A. Lugiato, “High-resolution ghost image and ghost diffraction experiments with thermal light,” Phys. Rev. Lett. 94, 183602 (2005).
[CrossRef] [PubMed]

Mair, A.

D. F. Phillips, A. Fleischhauer, A. Mair, R. L. Walsworth, and M. D. Lukin, “Storage of light in atomic vapor,” Phys. Rev. Lett. 86, 783–786 (2001).
[CrossRef] [PubMed]

Manson, N. B.

A. L. Alexander, J. J. Longdell, M. J. Sellars, and N. B. Manson, “Photon echoes produced by switching electric fields,” Phys. Rev. Lett. 96, 043602 (2006).
[CrossRef] [PubMed]

Marangos, J. P.

M. Fleischhauer, A. Imamoglu, and J. P. Marangos, “Electromagnetically induced transparency: optics in coherent media,” Rev. Mod. Phys. 77, 633–673 (2005).
[CrossRef]

Marino, A. M.

V. Boyer, A. M. Marino, R. C. Pooser, and P. D. Lett, “Entangled images from four-wave mixing,” Science 321, 544–547 (2008).
[CrossRef] [PubMed]

Massou, F.

M. D. Eisaman, A. André, F. Massou, M. Fleischhauer, A. S. Zibrov, and M. D. Lukin, “Electromagnetically induced transparency with tunable single-photon pulses,” Nature,  438, 837–841 (2005).
[CrossRef] [PubMed]

Meyers, R. E.

R. E. Meyers, K. S. Deacon, and Y. Shih, “Ghost-imaging experiment by measuring reflected photons,” Phys. Rev. A 77, 041801(R) (2008).
[CrossRef]

Nagatsuka, S.

K. Honda, D. Akamatsu, M. Arikawa, Y. Yokoi, K. Akiba, S. Nagatsuka, T. Tanimura, A. Furusawa, and M. Kozuma, “Storage and retrieval of a squeezed vacuum,” Phys. Rev. Lett. 100, 093601 (2008).
[CrossRef] [PubMed]

Nilsson, M.

M. U. Staudt, S. R. Hastings-Simon, M. Nilsson, M. Afzelius, V. Scarani, R. Ricken, H. Suche, W. Sohler, W. Tittel, and N. Gisin, “Fidelity of an optical memory based on stimulated photon echoes,” Phys. Rev. Lett. 98, 113601 (2007).
[CrossRef] [PubMed]

Nunn, J.

K. F. Reim, J. Nunn, V. O. Lorenz, B. J. Sussman, K. C. Lee, N. K. Langford, D. Jaksch, and I. A. Walmsley, “Towards high-speed optical quantum memories,” Nat. Photonics 4, 218–221 (2010).
[CrossRef]

O’Sullivan, M. N.

Phillips, D. F.

D. F. Phillips, A. Fleischhauer, A. Mair, R. L. Walsworth, and M. D. Lukin, “Storage of light in atomic vapor,” Phys. Rev. Lett. 86, 783–786 (2001).
[CrossRef] [PubMed]

Pittman, T. B.

T. B. Pittman, Y. H. Shih, D. V. Strekalov, and A. V. Sergienko, “Optical imaging by means of two-photon quantum entanglement,” Phys. Rev. A 52, R3429 (1995).
[CrossRef] [PubMed]

Polzik, E. S.

D. V. Vasilyev, I. V. Sokolov, and E. S. Polzik, “Quantum memory for images: a quantum hologram,” Phys. Rev. A. 77, 020302(R) (2008).
[CrossRef]

Pooser, R. C.

V. Boyer, A. M. Marino, R. C. Pooser, and P. D. Lett, “Entangled images from four-wave mixing,” Science 321, 544–547 (2008).
[CrossRef] [PubMed]

Pugatch, R.

M. Shuker, O. Firstenberg, R. Pugatch, A. Ron, and N. Davison, “Storing images in warm atomic vapor,” Phys. Rev. Lett. 100, 223601 (2008).
[CrossRef] [PubMed]

Reim, K. F.

K. F. Reim, J. Nunn, V. O. Lorenz, B. J. Sussman, K. C. Lee, N. K. Langford, D. Jaksch, and I. A. Walmsley, “Towards high-speed optical quantum memories,” Nat. Photonics 4, 218–221 (2010).
[CrossRef]

Ricken, R.

M. U. Staudt, S. R. Hastings-Simon, M. Nilsson, M. Afzelius, V. Scarani, R. Ricken, H. Suche, W. Sohler, W. Tittel, and N. Gisin, “Fidelity of an optical memory based on stimulated photon echoes,” Phys. Rev. Lett. 98, 113601 (2007).
[CrossRef] [PubMed]

Ron, A.

M. Shuker, O. Firstenberg, R. Pugatch, A. Ron, and N. Davison, “Storing images in warm atomic vapor,” Phys. Rev. Lett. 100, 223601 (2008).
[CrossRef] [PubMed]

Rudolf, A.

G. Heinze, A. Rudolf, F. Beil, and T. Halfmann, “Storage of images in atomic coherences in a rare-earth-ion-doped solid,” Phys. Rev. A 81, 011401(R) (2010).

Ruo Berchera, I.

G. Brida, M. V. Chekhova, G. A. Fornaro, M. Genovese, E. D. Lopaeva, and I. Ruo Berchera, “Systematic analysis of signal-to-noise ratio in bipartite ghost imaging with classical and quantum light,” Phys. Rev. A 83, 063807 (2011).
[CrossRef]

Sangouard, N.

C. Clausen, I. Usmani, F. Bussires, N. Sangouard, M. Afzelius, H. de Riedmatten, and N. Gisin, “Quantum storage of photonic entanglement in a crystal,” Nature 469, 508–511 (2011).
[CrossRef] [PubMed]

Scarani, V.

M. U. Staudt, S. R. Hastings-Simon, M. Nilsson, M. Afzelius, V. Scarani, R. Ricken, H. Suche, W. Sohler, W. Tittel, and N. Gisin, “Fidelity of an optical memory based on stimulated photon echoes,” Phys. Rev. Lett. 98, 113601 (2007).
[CrossRef] [PubMed]

Scarcelli, G.

G. Scarcelli, V. Berardi, and Y. Shih, “Can two-photon correlation of chaotic light be considered as correlation of intensity fluctuations?,” Phys. Rev. Lett. 96, 063602 (2006).
[CrossRef] [PubMed]

A. Valencia, G. Scarcelli, M. D’Angelo, and Y. Shih, “Two-photon imaging with thermal light,” Phys. Rev. Lett. 94, 063601 (2005).
[CrossRef] [PubMed]

Sellars, M. J.

M. P. Hedges, J. J. Longdell, Y. Li, and M. J. Sellars, “Efficient quantum memory for light,” Nature 465, 1052–1056 (2010).
[CrossRef] [PubMed]

A. L. Alexander, J. J. Longdell, M. J. Sellars, and N. B. Manson, “Photon echoes produced by switching electric fields,” Phys. Rev. Lett. 96, 043602 (2006).
[CrossRef] [PubMed]

Sergienko, A. V.

T. B. Pittman, Y. H. Shih, D. V. Strekalov, and A. V. Sergienko, “Optical imaging by means of two-photon quantum entanglement,” Phys. Rev. A 52, R3429 (1995).
[CrossRef] [PubMed]

Shapiro, J. H.

B. I. Erkmen and J. H. Shapiro, “Signal-to-noise ratio of Gussian-state ghost imaging,” Phys. Rev. A 79, 023833 (2009).
[CrossRef]

Shih, Y.

R. E. Meyers, K. S. Deacon, and Y. Shih, “Ghost-imaging experiment by measuring reflected photons,” Phys. Rev. A 77, 041801(R) (2008).
[CrossRef]

G. Scarcelli, V. Berardi, and Y. Shih, “Can two-photon correlation of chaotic light be considered as correlation of intensity fluctuations?,” Phys. Rev. Lett. 96, 063602 (2006).
[CrossRef] [PubMed]

A. Valencia, G. Scarcelli, M. D’Angelo, and Y. Shih, “Two-photon imaging with thermal light,” Phys. Rev. Lett. 94, 063601 (2005).
[CrossRef] [PubMed]

Shih, Y. H.

T. B. Pittman, Y. H. Shih, D. V. Strekalov, and A. V. Sergienko, “Optical imaging by means of two-photon quantum entanglement,” Phys. Rev. A 52, R3429 (1995).
[CrossRef] [PubMed]

Shuker, M.

M. Shuker, O. Firstenberg, R. Pugatch, A. Ron, and N. Davison, “Storing images in warm atomic vapor,” Phys. Rev. Lett. 100, 223601 (2008).
[CrossRef] [PubMed]

Simon, J.

H. Tanji, S. Ghosh, J. Simon, B. Bloom, and V. Vuleti?, “Heralded single-magnon quantum memory for photon polarization states,” Phys. Rev. Lett. 103, 043601 (2009).
[CrossRef] [PubMed]

Sohler, W.

M. U. Staudt, S. R. Hastings-Simon, M. Nilsson, M. Afzelius, V. Scarani, R. Ricken, H. Suche, W. Sohler, W. Tittel, and N. Gisin, “Fidelity of an optical memory based on stimulated photon echoes,” Phys. Rev. Lett. 98, 113601 (2007).
[CrossRef] [PubMed]

Sokolov, I. V.

D. V. Vasilyev, I. V. Sokolov, and E. S. Polzik, “Quantum memory for images: a quantum hologram,” Phys. Rev. A. 77, 020302(R) (2008).
[CrossRef]

Sparkes, B. M.

M. Hosseini, B. M. Sparkes, G. Campbell, P. K. Lam, and B. C. Buchler, “High efficiency coherent optical memory with warm rubidium vapour,” Nat. Commun. 2, 174 (2011).
[CrossRef] [PubMed]

Staudt, M. U.

M. U. Staudt, S. R. Hastings-Simon, M. Nilsson, M. Afzelius, V. Scarani, R. Ricken, H. Suche, W. Sohler, W. Tittel, and N. Gisin, “Fidelity of an optical memory based on stimulated photon echoes,” Phys. Rev. Lett. 98, 113601 (2007).
[CrossRef] [PubMed]

Strekalov, D. V.

T. B. Pittman, Y. H. Shih, D. V. Strekalov, and A. V. Sergienko, “Optical imaging by means of two-photon quantum entanglement,” Phys. Rev. A 52, R3429 (1995).
[CrossRef] [PubMed]

Suche, H.

M. U. Staudt, S. R. Hastings-Simon, M. Nilsson, M. Afzelius, V. Scarani, R. Ricken, H. Suche, W. Sohler, W. Tittel, and N. Gisin, “Fidelity of an optical memory based on stimulated photon echoes,” Phys. Rev. Lett. 98, 113601 (2007).
[CrossRef] [PubMed]

Sussman, B. J.

K. F. Reim, J. Nunn, V. O. Lorenz, B. J. Sussman, K. C. Lee, N. K. Langford, D. Jaksch, and I. A. Walmsley, “Towards high-speed optical quantum memories,” Nat. Photonics 4, 218–221 (2010).
[CrossRef]

Tajahuerce, E.

Tanimura, T.

K. Honda, D. Akamatsu, M. Arikawa, Y. Yokoi, K. Akiba, S. Nagatsuka, T. Tanimura, A. Furusawa, and M. Kozuma, “Storage and retrieval of a squeezed vacuum,” Phys. Rev. Lett. 100, 093601 (2008).
[CrossRef] [PubMed]

Tanji, H.

H. Tanji, S. Ghosh, J. Simon, B. Bloom, and V. Vuleti?, “Heralded single-magnon quantum memory for photon polarization states,” Phys. Rev. Lett. 103, 043601 (2009).
[CrossRef] [PubMed]

Tittel, W.

M. U. Staudt, S. R. Hastings-Simon, M. Nilsson, M. Afzelius, V. Scarani, R. Ricken, H. Suche, W. Sohler, W. Tittel, and N. Gisin, “Fidelity of an optical memory based on stimulated photon echoes,” Phys. Rev. Lett. 98, 113601 (2007).
[CrossRef] [PubMed]

Torres-Company, V.

Usmani, I.

C. Clausen, I. Usmani, F. Bussires, N. Sangouard, M. Afzelius, H. de Riedmatten, and N. Gisin, “Quantum storage of photonic entanglement in a crystal,” Nature 469, 508–511 (2011).
[CrossRef] [PubMed]

Valencia, A.

A. Valencia, G. Scarcelli, M. D’Angelo, and Y. Shih, “Two-photon imaging with thermal light,” Phys. Rev. Lett. 94, 063601 (2005).
[CrossRef] [PubMed]

Vasilyev, D. V.

D. V. Vasilyev, I. V. Sokolov, and E. S. Polzik, “Quantum memory for images: a quantum hologram,” Phys. Rev. A. 77, 020302(R) (2008).
[CrossRef]

Vudyasetu, P. K.

P. K. Vudyasetu, R. M. Camacho, and J. C. Howell, “Storage and retrieval of multimode transverse images in hot atomic rubidium vapor,” Phys. Rev. Lett. 100, 123903 (2008).
[CrossRef] [PubMed]

Vuletic, V.

H. Tanji, S. Ghosh, J. Simon, B. Bloom, and V. Vuleti?, “Heralded single-magnon quantum memory for photon polarization states,” Phys. Rev. Lett. 103, 043601 (2009).
[CrossRef] [PubMed]

Walmsley, I. A.

K. F. Reim, J. Nunn, V. O. Lorenz, B. J. Sussman, K. C. Lee, N. K. Langford, D. Jaksch, and I. A. Walmsley, “Towards high-speed optical quantum memories,” Nat. Photonics 4, 218–221 (2010).
[CrossRef]

Walsworth, R. L.

D. F. Phillips, A. Fleischhauer, A. Mair, R. L. Walsworth, and M. D. Lukin, “Storage of light in atomic vapor,” Phys. Rev. Lett. 86, 783–786 (2001).
[CrossRef] [PubMed]

Wang, T.

L. Zhao, T. Wang, Y. Xiao, and S. F. Yelin, “Image storage in hot vapors,” Phys. Rev. A 77, 041802(R) (2008).
[CrossRef]

Xiao, Y.

L. Zhao, T. Wang, Y. Xiao, and S. F. Yelin, “Image storage in hot vapors,” Phys. Rev. A 77, 041802(R) (2008).
[CrossRef]

Yelin, S. F.

L. Zhao, T. Wang, Y. Xiao, and S. F. Yelin, “Image storage in hot vapors,” Phys. Rev. A 77, 041802(R) (2008).
[CrossRef]

Yokoi, Y.

K. Honda, D. Akamatsu, M. Arikawa, Y. Yokoi, K. Akiba, S. Nagatsuka, T. Tanimura, A. Furusawa, and M. Kozuma, “Storage and retrieval of a squeezed vacuum,” Phys. Rev. Lett. 100, 093601 (2008).
[CrossRef] [PubMed]

Zhao, L.

L. Zhao, T. Wang, Y. Xiao, and S. F. Yelin, “Image storage in hot vapors,” Phys. Rev. A 77, 041802(R) (2008).
[CrossRef]

Zibrov, A. S.

M. D. Eisaman, A. André, F. Massou, M. Fleischhauer, A. S. Zibrov, and M. D. Lukin, “Electromagnetically induced transparency with tunable single-photon pulses,” Nature,  438, 837–841 (2005).
[CrossRef] [PubMed]

J. of Mod. Opt. (1)

A. Gatti, M. Bache, D. Magatti, E. Brambilla, F. Ferri, and L. A. Lugiato, “Coherent imaging with pseudo-thermal incoherent light,” J. of Mod. Opt. 53, 739–760 (2006).
[CrossRef]

Nat. Commun. (1)

M. Hosseini, B. M. Sparkes, G. Campbell, P. K. Lam, and B. C. Buchler, “High efficiency coherent optical memory with warm rubidium vapour,” Nat. Commun. 2, 174 (2011).
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Other (2)

The cross correlation for the ghost imaging is calculated by the following equation, G(r?)=?iN?Ii?Ji(r?), where ?Ii=Ii?1N?iNIi and ?Ji(r?)=Ji(r?)?1N?iNJi(r?) are fluctuations of photodetector and CCD output signals, respectively.

A delay/pulse generator (SRS, DG535) provides the synchronization pulses for the CCD (JAI, CM-030-GE), the digitizer (NI, PCI-5114), and the two acousto-optic modulators used in the experiment. Each “measurement” is then repeated at 1.5 Hz.

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Figures (4)

Fig. 1
Fig. 1

(a) Two beams that have transverse spatial correlation are prepared by splitting a thermal light beam with a polarizing beam splitter PBS1. One beam (reference) goes through the mask with OCR-a character 5 and is detected by a bucket detector. The other beam (signal) is stored in and retrieved from the EIT medium (Rb vapor cell). Note that neither the bucket detector nor the CCD alone provide any information about the object (mask). The ghost image of the mask is revealed in the correlation measurement between the bucket detector and the CCD. (b) Schematic diagram of the experiment. See text for details.

Fig. 2
Fig. 2

Reconstruction of the ghost image. (a) A single shot image of the CCD shows the speckle pattern. (b) Normalized spatial intensity autocorrelation measured from the speckle pattern. (c) The reconstructed ghost image, averaged over 5,000 shots. An inverted image of the mask (OCR-a character 5) is revealed.

Fig. 3
Fig. 3

(a) Synchronized timing sequence for storage and retrieval of ghost images. (b) Ghost image storage and retrieval. The storage time is 4 μs ∼ 16 μs. The ghost images are reconstructed from 5,000 shots of bucket detector - CCD correlation measurements.

Fig. 4
Fig. 4

(a) Vertical cross-sections, at x = −37 μm, of the ghost images shown in Fig. 3(b). (b) Contrast-to-Noise Ratio (CNR) of the ghost images and the partial retrieval efficiency with the storage time. The error bars denote statistical one standard deviation errors.

Equations (2)

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ρ 12 ( r 2 , t ) t = D ( 2 x 2 + 2 y 2 ) ρ 12 ( r 2 , t ) Γ ρ 12 ( r 2 , t ) ,
d r 1 G ( r 1 , r 2 ) | T ( m r 2 ) | 2 exp ( 2 ( β + Γ ) t s ) .

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