Abstract

We report on the generation of indistinguishable photon pairs at telecom wavelengths based on a type-II parametric down conversion process in a periodically poled potassium titanyl phosphate (PPKTP) crystal. The phase matching, pump laser characteristics and coupling geometry are optimised to obtain spectrally uncorrelated photons with high coupling efficiencies. Four photons are generated by a counter-propagating pump in the same crystal and anlysed via two photon interference experiments between photons from each pair source as well as joint spectral and g(2) measurements. We obtain a spectral purity of 0.91 and coupling efficiencies around 90% for all four photons without any filtering. These pure indistinguishable photon sources at telecom wavelengths are perfectly adapted for quantum network demonstrations and other multi-photon protocols.

© 2014 Optical Society of America

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    [CrossRef]
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    [CrossRef]
  25. M. Fejer, G. Magel, D. H. Jundt, and R. Byer, “Quasi-phase-matched second harmonic generation: tuning and tolerances,” IEEE J. Quantum Electron. 28, 2631–2654 (1992).
    [CrossRef]
  26. D. Ljunggren and M. Tengner, “Optimal focusing for maximal collection of entangled narrow-band photon pairs into single-mode fibers,” Phys. Rev. A 72, 062301 (2005).
    [CrossRef]
  27. C. I. Osorio, N. Sangouard, and R. T. Thew, “On the purity and indistinguishability of down-converted photons,” J. Phys. B: At. Mol. Opt. Phys 46, 055501 (2013).
    [CrossRef]
  28. R. Hanbury Brown and R. Q. Twiss, “Correlation between Photons in two Coherent Beams of Light,” Nature 177, 27–29 (1956).
    [CrossRef]
  29. P. R. Tapster and J. G. Rarity, “Photon statistics of pulsed parametric light,” J. Mod. Opt. 45, 595–604 (1998).
    [CrossRef]
  30. A. Christ, K. Laiho, A. Eckstein, K. N. Cassemiro, and C. Silberhorn, “Probing multimode squeezing with correlation functions,” New J. Phys. 13, 033027 (2011).
    [CrossRef]
  31. P. Sekatski, N. Sangouard, F. Bussières, C. Clausen, N. Gisin, and H. Zbinden, “Detector imperfections in photon-pair source characterization,” J. Phys. B: At., Mol. Opt. Phys. 45, 124016 (2012).
    [CrossRef]

2014 (1)

2013 (7)

J. B. Spring, P. S. Salter, B. J. Metcalf, P. C. Humphreys, M. Moore, N. Thomas-Peter, M. Barbieri, X.-M. Jin, N. K. Langford, W. S. Kolthammer, M. J. Booth, and I. A. Walmsley, “On-chip low loss heralded source of pure single photons,” Opt. Express 21, 13522 (2013).
[CrossRef] [PubMed]

G. Harder, V. Ansari, B. Brecht, T. Dirmeier, C. Marquardt, and C. Silberhorn, “An optimized photon pair source for quantum circuits,” Opt. Express 21, 13975 (2013).
[CrossRef] [PubMed]

R.-B. Jin, R. Shimizu, K. Wakui, H. Benichi, and M. Sasaki, “Widely tunable single photon source with high purity at telecom wavelength,” Opt. Express 21, 10659 (2013).
[CrossRef] [PubMed]

R. Jin, K. Wakui, R. Shimizu, H. Benichi, S. Miki, T. Yamashita, H. Terai, Z. Wang, M. Fujiwara, and M. Sasaki, “Nonclassical interference between independent intrinsically pure single photons at telecommunication wavelength,” Phys. Rev. A 87, 063801 (2013).
[CrossRef]

R. Ikuta, T. Kobayashi, H. Kato, S. Miki, T. Yamashita, H. Terai, M. Fujiwara, T. Yamamoto, M. Koashi, M. Sasaki, Z. Wang, and N. Imoto, “Nonclassical two-photon interference between independent telecommunication light pulses converted by difference-frequency generation,” Phys. Rev. A 88, 042317 (2013).
[CrossRef]

T. Guerreiro, A. Martin, B. Sanguinetti, N. Bruno, H. Zbinden, and R. T. Thew, “High efficiency coupling of photon pairs in practice,” Opt. Express 21, 27641–27651 (2013).
[CrossRef]

C. I. Osorio, N. Sangouard, and R. T. Thew, “On the purity and indistinguishability of down-converted photons,” J. Phys. B: At. Mol. Opt. Phys 46, 055501 (2013).
[CrossRef]

2012 (5)

P. Sekatski, N. Sangouard, F. Bussières, C. Clausen, N. Gisin, and H. Zbinden, “Detector imperfections in photon-pair source characterization,” J. Phys. B: At., Mol. Opt. Phys. 45, 124016 (2012).
[CrossRef]

A. Martin, O. Alibart, M. P. De Micheli, D. B. Ostrowsky, and S. Tanzilli, “A quantum relay chip based on telecommunication integrated optics technology,” New J. Phys. 14, 025002 (2012).
[CrossRef]

M. Yabuno, R. Shimizu, Y. Mitsumori, H. Kosaka, and K. Edamatsu, “Four-photon quantum interferometry at a telecom wavelength,” Phys. Rev. A 86, 010302 (2012).
[CrossRef]

A. Aspuru-Guzik and P. Walther, “Photonic quantum simulators,” Nat. Phys. 8, 285–291 (2012).
[CrossRef]

S. Tanzilli, A. Martin, F. Kaiser, M. P. De Micheli, O. Alibart, and D. B. Ostrowsky, “On the genesis and evolution of Integrated Quantum Optics,” Laser Photonics Rev. 6, 115–143 (2012).
[CrossRef]

2011 (3)

K. Edamatsu, R. Shimizu, W. Ueno, R. Jin, F. Kanedas, M. Yabuno, H. Suzuki, S. Nagano, A. Syouji, and K. Suizu, “Photon pair sources with controlled frequency correlation,” Prog. Informatics 8, 19–26 (2011).
[CrossRef]

C. Söller, O. Cohen, B. J. Smith, I. A. Walmsley, and C. Silberhorn, “High-performance single-photon generation with commercial-grade optical fiber,” Phys. Rev. A 83, 1–4 (2011).
[CrossRef]

A. Christ, K. Laiho, A. Eckstein, K. N. Cassemiro, and C. Silberhorn, “Probing multimode squeezing with correlation functions,” New J. Phys. 13, 033027 (2011).
[CrossRef]

2010 (1)

P. Evans, R. Bennink, W. Grice, T. Humble, and J. Schaake, “Bright Source of Spectrally Uncorrelated Polarization-Entangled Photons with Nearly Single-Mode Emission,” Phys. Rev. Lett. 105, 253601 (2010).
[CrossRef]

2009 (1)

R. Kaltenbaek, R. Prevedel, M. Aspelmeyer, and A. Zeilinger, “High-fidelity entanglement swapping with fully independent sources,” Phys. Rev. A 79, 040302 (2009).
[CrossRef]

2008 (3)

H. J. Kimble, “The quantum internet,” Nature 453, 1023–1030 (2008).
[CrossRef] [PubMed]

P. J. Mosley, J. S. Lundeen, B. J. Smith, P. Wasylczyk, A. B. U’Ren, C. Silberhorn, and I. A. Walmsley, “Heralded Generation of Ultrafast Single Photons in Pure Quantum States,” Phys. Rev. Lett. 100, 133601 (2008).
[CrossRef] [PubMed]

P. J. Mosley, J. S. Lundeen, B. J. Smith, and I. A. Walmsley, “Conditional preparation of single photons using parametric downconversion: a recipe for purity,” New J. Phys. 10, 093011 (2008).
[CrossRef]

2007 (3)

N. Gisin and R. Thew, “Quantum communication,” Nat. Photonics 1, 165 (2007).
[CrossRef]

M. Halder, A. Beveratos, N. Gisin, V. Scarani, C. Simon, and H. Zbinden, “Entangling independent photons by time measurement,” Nat. Phys. 3, 692–695 (2007).
[CrossRef]

J. Fulconis, O. Alibart, J. L. O’Brien, W. J. Wadsworth, and J. G. Rarity, “Nonclassical Interference and Entanglement Generation Using a Photonic Crystal Fiber Pair Photon Source,” Phys. Rev. Lett. 99, 120501 (2007).
[CrossRef] [PubMed]

2005 (2)

H. de Riedmatten, I. Marcikic, J. A. W. van Houwelingen, W. Tittel, H. Zbinden, and N. Gisin, “Long-distance entanglement swapping with photons from separated sources,” Phys. Rev. A 71, 050302 (2005).
[CrossRef]

D. Ljunggren and M. Tengner, “Optimal focusing for maximal collection of entangled narrow-band photon pairs into single-mode fibers,” Phys. Rev. A 72, 062301 (2005).
[CrossRef]

2001 (1)

W. Grice, A. U’ren, and I. Walmsley, “Eliminating frequency and space-time correlations in multiphoton states,” Phys. Rev. A 64, 063815 (2001).
[CrossRef]

1998 (1)

P. R. Tapster and J. G. Rarity, “Photon statistics of pulsed parametric light,” J. Mod. Opt. 45, 595–604 (1998).
[CrossRef]

1992 (1)

M. Fejer, G. Magel, D. H. Jundt, and R. Byer, “Quasi-phase-matched second harmonic generation: tuning and tolerances,” IEEE J. Quantum Electron. 28, 2631–2654 (1992).
[CrossRef]

1956 (1)

R. Hanbury Brown and R. Q. Twiss, “Correlation between Photons in two Coherent Beams of Light,” Nature 177, 27–29 (1956).
[CrossRef]

Alibart, O.

S. Tanzilli, A. Martin, F. Kaiser, M. P. De Micheli, O. Alibart, and D. B. Ostrowsky, “On the genesis and evolution of Integrated Quantum Optics,” Laser Photonics Rev. 6, 115–143 (2012).
[CrossRef]

A. Martin, O. Alibart, M. P. De Micheli, D. B. Ostrowsky, and S. Tanzilli, “A quantum relay chip based on telecommunication integrated optics technology,” New J. Phys. 14, 025002 (2012).
[CrossRef]

J. Fulconis, O. Alibart, J. L. O’Brien, W. J. Wadsworth, and J. G. Rarity, “Nonclassical Interference and Entanglement Generation Using a Photonic Crystal Fiber Pair Photon Source,” Phys. Rev. Lett. 99, 120501 (2007).
[CrossRef] [PubMed]

Ansari, V.

Aspelmeyer, M.

R. Kaltenbaek, R. Prevedel, M. Aspelmeyer, and A. Zeilinger, “High-fidelity entanglement swapping with fully independent sources,” Phys. Rev. A 79, 040302 (2009).
[CrossRef]

Aspuru-Guzik, A.

A. Aspuru-Guzik and P. Walther, “Photonic quantum simulators,” Nat. Phys. 8, 285–291 (2012).
[CrossRef]

Barbieri, M.

Benichi, H.

R.-B. Jin, R. Shimizu, K. Wakui, H. Benichi, and M. Sasaki, “Widely tunable single photon source with high purity at telecom wavelength,” Opt. Express 21, 10659 (2013).
[CrossRef] [PubMed]

R. Jin, K. Wakui, R. Shimizu, H. Benichi, S. Miki, T. Yamashita, H. Terai, Z. Wang, M. Fujiwara, and M. Sasaki, “Nonclassical interference between independent intrinsically pure single photons at telecommunication wavelength,” Phys. Rev. A 87, 063801 (2013).
[CrossRef]

Bennink, R.

P. Evans, R. Bennink, W. Grice, T. Humble, and J. Schaake, “Bright Source of Spectrally Uncorrelated Polarization-Entangled Photons with Nearly Single-Mode Emission,” Phys. Rev. Lett. 105, 253601 (2010).
[CrossRef]

Beveratos, A.

M. Halder, A. Beveratos, N. Gisin, V. Scarani, C. Simon, and H. Zbinden, “Entangling independent photons by time measurement,” Nat. Phys. 3, 692–695 (2007).
[CrossRef]

Booth, M. J.

Brecht, B.

Bruno, N.

T. Guerreiro, A. Martin, B. Sanguinetti, N. Bruno, H. Zbinden, and R. T. Thew, “High efficiency coupling of photon pairs in practice,” Opt. Express 21, 27641–27651 (2013).
[CrossRef]

N. Bruno, A. Martin, and R. T. Thew, “Generation of tunable wavelength coherent states and heralded single photons for quantum optics applications,” arXiv:1309.6172 p. 5 (2013).

Bussières, F.

P. Sekatski, N. Sangouard, F. Bussières, C. Clausen, N. Gisin, and H. Zbinden, “Detector imperfections in photon-pair source characterization,” J. Phys. B: At., Mol. Opt. Phys. 45, 124016 (2012).
[CrossRef]

Byer, R.

M. Fejer, G. Magel, D. H. Jundt, and R. Byer, “Quasi-phase-matched second harmonic generation: tuning and tolerances,” IEEE J. Quantum Electron. 28, 2631–2654 (1992).
[CrossRef]

Cassemiro, K. N.

A. Christ, K. Laiho, A. Eckstein, K. N. Cassemiro, and C. Silberhorn, “Probing multimode squeezing with correlation functions,” New J. Phys. 13, 033027 (2011).
[CrossRef]

Christ, A.

A. Christ, K. Laiho, A. Eckstein, K. N. Cassemiro, and C. Silberhorn, “Probing multimode squeezing with correlation functions,” New J. Phys. 13, 033027 (2011).
[CrossRef]

Clausen, C.

P. Sekatski, N. Sangouard, F. Bussières, C. Clausen, N. Gisin, and H. Zbinden, “Detector imperfections in photon-pair source characterization,” J. Phys. B: At., Mol. Opt. Phys. 45, 124016 (2012).
[CrossRef]

Cohen, O.

C. Söller, O. Cohen, B. J. Smith, I. A. Walmsley, and C. Silberhorn, “High-performance single-photon generation with commercial-grade optical fiber,” Phys. Rev. A 83, 1–4 (2011).
[CrossRef]

De Micheli, M. P.

S. Tanzilli, A. Martin, F. Kaiser, M. P. De Micheli, O. Alibart, and D. B. Ostrowsky, “On the genesis and evolution of Integrated Quantum Optics,” Laser Photonics Rev. 6, 115–143 (2012).
[CrossRef]

A. Martin, O. Alibart, M. P. De Micheli, D. B. Ostrowsky, and S. Tanzilli, “A quantum relay chip based on telecommunication integrated optics technology,” New J. Phys. 14, 025002 (2012).
[CrossRef]

de Riedmatten, H.

H. de Riedmatten, I. Marcikic, J. A. W. van Houwelingen, W. Tittel, H. Zbinden, and N. Gisin, “Long-distance entanglement swapping with photons from separated sources,” Phys. Rev. A 71, 050302 (2005).
[CrossRef]

Dirmeier, T.

Eckstein, A.

A. Christ, K. Laiho, A. Eckstein, K. N. Cassemiro, and C. Silberhorn, “Probing multimode squeezing with correlation functions,” New J. Phys. 13, 033027 (2011).
[CrossRef]

Edamatsu, K.

M. Yabuno, R. Shimizu, Y. Mitsumori, H. Kosaka, and K. Edamatsu, “Four-photon quantum interferometry at a telecom wavelength,” Phys. Rev. A 86, 010302 (2012).
[CrossRef]

K. Edamatsu, R. Shimizu, W. Ueno, R. Jin, F. Kanedas, M. Yabuno, H. Suzuki, S. Nagano, A. Syouji, and K. Suizu, “Photon pair sources with controlled frequency correlation,” Prog. Informatics 8, 19–26 (2011).
[CrossRef]

Evans, P.

P. Evans, R. Bennink, W. Grice, T. Humble, and J. Schaake, “Bright Source of Spectrally Uncorrelated Polarization-Entangled Photons with Nearly Single-Mode Emission,” Phys. Rev. Lett. 105, 253601 (2010).
[CrossRef]

Fejer, M.

M. Fejer, G. Magel, D. H. Jundt, and R. Byer, “Quasi-phase-matched second harmonic generation: tuning and tolerances,” IEEE J. Quantum Electron. 28, 2631–2654 (1992).
[CrossRef]

Fujiwara, M.

R. Ikuta, T. Kobayashi, H. Kato, S. Miki, T. Yamashita, H. Terai, M. Fujiwara, T. Yamamoto, M. Koashi, M. Sasaki, Z. Wang, and N. Imoto, “Nonclassical two-photon interference between independent telecommunication light pulses converted by difference-frequency generation,” Phys. Rev. A 88, 042317 (2013).
[CrossRef]

R. Jin, K. Wakui, R. Shimizu, H. Benichi, S. Miki, T. Yamashita, H. Terai, Z. Wang, M. Fujiwara, and M. Sasaki, “Nonclassical interference between independent intrinsically pure single photons at telecommunication wavelength,” Phys. Rev. A 87, 063801 (2013).
[CrossRef]

Fulconis, J.

J. Fulconis, O. Alibart, J. L. O’Brien, W. J. Wadsworth, and J. G. Rarity, “Nonclassical Interference and Entanglement Generation Using a Photonic Crystal Fiber Pair Photon Source,” Phys. Rev. Lett. 99, 120501 (2007).
[CrossRef] [PubMed]

Gisin, N.

P. Sekatski, N. Sangouard, F. Bussières, C. Clausen, N. Gisin, and H. Zbinden, “Detector imperfections in photon-pair source characterization,” J. Phys. B: At., Mol. Opt. Phys. 45, 124016 (2012).
[CrossRef]

N. Gisin and R. Thew, “Quantum communication,” Nat. Photonics 1, 165 (2007).
[CrossRef]

M. Halder, A. Beveratos, N. Gisin, V. Scarani, C. Simon, and H. Zbinden, “Entangling independent photons by time measurement,” Nat. Phys. 3, 692–695 (2007).
[CrossRef]

H. de Riedmatten, I. Marcikic, J. A. W. van Houwelingen, W. Tittel, H. Zbinden, and N. Gisin, “Long-distance entanglement swapping with photons from separated sources,” Phys. Rev. A 71, 050302 (2005).
[CrossRef]

Grice, W.

P. Evans, R. Bennink, W. Grice, T. Humble, and J. Schaake, “Bright Source of Spectrally Uncorrelated Polarization-Entangled Photons with Nearly Single-Mode Emission,” Phys. Rev. Lett. 105, 253601 (2010).
[CrossRef]

W. Grice, A. U’ren, and I. Walmsley, “Eliminating frequency and space-time correlations in multiphoton states,” Phys. Rev. A 64, 063815 (2001).
[CrossRef]

Guerreiro, T.

Halder, M.

M. Halder, A. Beveratos, N. Gisin, V. Scarani, C. Simon, and H. Zbinden, “Entangling independent photons by time measurement,” Nat. Phys. 3, 692–695 (2007).
[CrossRef]

Hanbury Brown, R.

R. Hanbury Brown and R. Q. Twiss, “Correlation between Photons in two Coherent Beams of Light,” Nature 177, 27–29 (1956).
[CrossRef]

Harder, G.

Humble, T.

P. Evans, R. Bennink, W. Grice, T. Humble, and J. Schaake, “Bright Source of Spectrally Uncorrelated Polarization-Entangled Photons with Nearly Single-Mode Emission,” Phys. Rev. Lett. 105, 253601 (2010).
[CrossRef]

Humphreys, P. C.

Ikuta, R.

R. Ikuta, T. Kobayashi, H. Kato, S. Miki, T. Yamashita, H. Terai, M. Fujiwara, T. Yamamoto, M. Koashi, M. Sasaki, Z. Wang, and N. Imoto, “Nonclassical two-photon interference between independent telecommunication light pulses converted by difference-frequency generation,” Phys. Rev. A 88, 042317 (2013).
[CrossRef]

Imoto, N.

R. Ikuta, T. Kobayashi, H. Kato, S. Miki, T. Yamashita, H. Terai, M. Fujiwara, T. Yamamoto, M. Koashi, M. Sasaki, Z. Wang, and N. Imoto, “Nonclassical two-photon interference between independent telecommunication light pulses converted by difference-frequency generation,” Phys. Rev. A 88, 042317 (2013).
[CrossRef]

Jennewein, T.

Jin, R.

R. Jin, K. Wakui, R. Shimizu, H. Benichi, S. Miki, T. Yamashita, H. Terai, Z. Wang, M. Fujiwara, and M. Sasaki, “Nonclassical interference between independent intrinsically pure single photons at telecommunication wavelength,” Phys. Rev. A 87, 063801 (2013).
[CrossRef]

K. Edamatsu, R. Shimizu, W. Ueno, R. Jin, F. Kanedas, M. Yabuno, H. Suzuki, S. Nagano, A. Syouji, and K. Suizu, “Photon pair sources with controlled frequency correlation,” Prog. Informatics 8, 19–26 (2011).
[CrossRef]

Jin, R.-B.

Jin, X.-M.

Jundt, D. H.

M. Fejer, G. Magel, D. H. Jundt, and R. Byer, “Quasi-phase-matched second harmonic generation: tuning and tolerances,” IEEE J. Quantum Electron. 28, 2631–2654 (1992).
[CrossRef]

Kaiser, F.

S. Tanzilli, A. Martin, F. Kaiser, M. P. De Micheli, O. Alibart, and D. B. Ostrowsky, “On the genesis and evolution of Integrated Quantum Optics,” Laser Photonics Rev. 6, 115–143 (2012).
[CrossRef]

Kaltenbaek, R.

R. Kaltenbaek, R. Prevedel, M. Aspelmeyer, and A. Zeilinger, “High-fidelity entanglement swapping with fully independent sources,” Phys. Rev. A 79, 040302 (2009).
[CrossRef]

Kanedas, F.

K. Edamatsu, R. Shimizu, W. Ueno, R. Jin, F. Kanedas, M. Yabuno, H. Suzuki, S. Nagano, A. Syouji, and K. Suizu, “Photon pair sources with controlled frequency correlation,” Prog. Informatics 8, 19–26 (2011).
[CrossRef]

Kato, H.

R. Ikuta, T. Kobayashi, H. Kato, S. Miki, T. Yamashita, H. Terai, M. Fujiwara, T. Yamamoto, M. Koashi, M. Sasaki, Z. Wang, and N. Imoto, “Nonclassical two-photon interference between independent telecommunication light pulses converted by difference-frequency generation,” Phys. Rev. A 88, 042317 (2013).
[CrossRef]

Kimble, H. J.

H. J. Kimble, “The quantum internet,” Nature 453, 1023–1030 (2008).
[CrossRef] [PubMed]

Koashi, M.

R. Ikuta, T. Kobayashi, H. Kato, S. Miki, T. Yamashita, H. Terai, M. Fujiwara, T. Yamamoto, M. Koashi, M. Sasaki, Z. Wang, and N. Imoto, “Nonclassical two-photon interference between independent telecommunication light pulses converted by difference-frequency generation,” Phys. Rev. A 88, 042317 (2013).
[CrossRef]

Kobayashi, T.

R. Ikuta, T. Kobayashi, H. Kato, S. Miki, T. Yamashita, H. Terai, M. Fujiwara, T. Yamamoto, M. Koashi, M. Sasaki, Z. Wang, and N. Imoto, “Nonclassical two-photon interference between independent telecommunication light pulses converted by difference-frequency generation,” Phys. Rev. A 88, 042317 (2013).
[CrossRef]

Kolenderski, P.

Kolthammer, W. S.

Kosaka, H.

M. Yabuno, R. Shimizu, Y. Mitsumori, H. Kosaka, and K. Edamatsu, “Four-photon quantum interferometry at a telecom wavelength,” Phys. Rev. A 86, 010302 (2012).
[CrossRef]

Laiho, K.

A. Christ, K. Laiho, A. Eckstein, K. N. Cassemiro, and C. Silberhorn, “Probing multimode squeezing with correlation functions,” New J. Phys. 13, 033027 (2011).
[CrossRef]

Langford, N. K.

Ljunggren, D.

D. Ljunggren and M. Tengner, “Optimal focusing for maximal collection of entangled narrow-band photon pairs into single-mode fibers,” Phys. Rev. A 72, 062301 (2005).
[CrossRef]

Lundeen, J. S.

P. J. Mosley, J. S. Lundeen, B. J. Smith, and I. A. Walmsley, “Conditional preparation of single photons using parametric downconversion: a recipe for purity,” New J. Phys. 10, 093011 (2008).
[CrossRef]

P. J. Mosley, J. S. Lundeen, B. J. Smith, P. Wasylczyk, A. B. U’Ren, C. Silberhorn, and I. A. Walmsley, “Heralded Generation of Ultrafast Single Photons in Pure Quantum States,” Phys. Rev. Lett. 100, 133601 (2008).
[CrossRef] [PubMed]

Lutz, T.

Magel, G.

M. Fejer, G. Magel, D. H. Jundt, and R. Byer, “Quasi-phase-matched second harmonic generation: tuning and tolerances,” IEEE J. Quantum Electron. 28, 2631–2654 (1992).
[CrossRef]

Marcikic, I.

H. de Riedmatten, I. Marcikic, J. A. W. van Houwelingen, W. Tittel, H. Zbinden, and N. Gisin, “Long-distance entanglement swapping with photons from separated sources,” Phys. Rev. A 71, 050302 (2005).
[CrossRef]

Marquardt, C.

Martin, A.

T. Guerreiro, A. Martin, B. Sanguinetti, N. Bruno, H. Zbinden, and R. T. Thew, “High efficiency coupling of photon pairs in practice,” Opt. Express 21, 27641–27651 (2013).
[CrossRef]

A. Martin, O. Alibart, M. P. De Micheli, D. B. Ostrowsky, and S. Tanzilli, “A quantum relay chip based on telecommunication integrated optics technology,” New J. Phys. 14, 025002 (2012).
[CrossRef]

S. Tanzilli, A. Martin, F. Kaiser, M. P. De Micheli, O. Alibart, and D. B. Ostrowsky, “On the genesis and evolution of Integrated Quantum Optics,” Laser Photonics Rev. 6, 115–143 (2012).
[CrossRef]

N. Bruno, A. Martin, and R. T. Thew, “Generation of tunable wavelength coherent states and heralded single photons for quantum optics applications,” arXiv:1309.6172 p. 5 (2013).

Metcalf, B. J.

Miki, S.

R. Ikuta, T. Kobayashi, H. Kato, S. Miki, T. Yamashita, H. Terai, M. Fujiwara, T. Yamamoto, M. Koashi, M. Sasaki, Z. Wang, and N. Imoto, “Nonclassical two-photon interference between independent telecommunication light pulses converted by difference-frequency generation,” Phys. Rev. A 88, 042317 (2013).
[CrossRef]

R. Jin, K. Wakui, R. Shimizu, H. Benichi, S. Miki, T. Yamashita, H. Terai, Z. Wang, M. Fujiwara, and M. Sasaki, “Nonclassical interference between independent intrinsically pure single photons at telecommunication wavelength,” Phys. Rev. A 87, 063801 (2013).
[CrossRef]

Mitsumori, Y.

M. Yabuno, R. Shimizu, Y. Mitsumori, H. Kosaka, and K. Edamatsu, “Four-photon quantum interferometry at a telecom wavelength,” Phys. Rev. A 86, 010302 (2012).
[CrossRef]

Moore, M.

Mosley, P. J.

P. J. Mosley, J. S. Lundeen, B. J. Smith, P. Wasylczyk, A. B. U’Ren, C. Silberhorn, and I. A. Walmsley, “Heralded Generation of Ultrafast Single Photons in Pure Quantum States,” Phys. Rev. Lett. 100, 133601 (2008).
[CrossRef] [PubMed]

P. J. Mosley, J. S. Lundeen, B. J. Smith, and I. A. Walmsley, “Conditional preparation of single photons using parametric downconversion: a recipe for purity,” New J. Phys. 10, 093011 (2008).
[CrossRef]

Nagano, S.

K. Edamatsu, R. Shimizu, W. Ueno, R. Jin, F. Kanedas, M. Yabuno, H. Suzuki, S. Nagano, A. Syouji, and K. Suizu, “Photon pair sources with controlled frequency correlation,” Prog. Informatics 8, 19–26 (2011).
[CrossRef]

O’Brien, J. L.

J. Fulconis, O. Alibart, J. L. O’Brien, W. J. Wadsworth, and J. G. Rarity, “Nonclassical Interference and Entanglement Generation Using a Photonic Crystal Fiber Pair Photon Source,” Phys. Rev. Lett. 99, 120501 (2007).
[CrossRef] [PubMed]

Osorio, C. I.

C. I. Osorio, N. Sangouard, and R. T. Thew, “On the purity and indistinguishability of down-converted photons,” J. Phys. B: At. Mol. Opt. Phys 46, 055501 (2013).
[CrossRef]

Ostrowsky, D. B.

A. Martin, O. Alibart, M. P. De Micheli, D. B. Ostrowsky, and S. Tanzilli, “A quantum relay chip based on telecommunication integrated optics technology,” New J. Phys. 14, 025002 (2012).
[CrossRef]

S. Tanzilli, A. Martin, F. Kaiser, M. P. De Micheli, O. Alibart, and D. B. Ostrowsky, “On the genesis and evolution of Integrated Quantum Optics,” Laser Photonics Rev. 6, 115–143 (2012).
[CrossRef]

Prevedel, R.

R. Kaltenbaek, R. Prevedel, M. Aspelmeyer, and A. Zeilinger, “High-fidelity entanglement swapping with fully independent sources,” Phys. Rev. A 79, 040302 (2009).
[CrossRef]

Rarity, J. G.

J. Fulconis, O. Alibart, J. L. O’Brien, W. J. Wadsworth, and J. G. Rarity, “Nonclassical Interference and Entanglement Generation Using a Photonic Crystal Fiber Pair Photon Source,” Phys. Rev. Lett. 99, 120501 (2007).
[CrossRef] [PubMed]

P. R. Tapster and J. G. Rarity, “Photon statistics of pulsed parametric light,” J. Mod. Opt. 45, 595–604 (1998).
[CrossRef]

Salter, P. S.

Sangouard, N.

C. I. Osorio, N. Sangouard, and R. T. Thew, “On the purity and indistinguishability of down-converted photons,” J. Phys. B: At. Mol. Opt. Phys 46, 055501 (2013).
[CrossRef]

P. Sekatski, N. Sangouard, F. Bussières, C. Clausen, N. Gisin, and H. Zbinden, “Detector imperfections in photon-pair source characterization,” J. Phys. B: At., Mol. Opt. Phys. 45, 124016 (2012).
[CrossRef]

Sanguinetti, B.

Sasaki, M.

R. Ikuta, T. Kobayashi, H. Kato, S. Miki, T. Yamashita, H. Terai, M. Fujiwara, T. Yamamoto, M. Koashi, M. Sasaki, Z. Wang, and N. Imoto, “Nonclassical two-photon interference between independent telecommunication light pulses converted by difference-frequency generation,” Phys. Rev. A 88, 042317 (2013).
[CrossRef]

R. Jin, K. Wakui, R. Shimizu, H. Benichi, S. Miki, T. Yamashita, H. Terai, Z. Wang, M. Fujiwara, and M. Sasaki, “Nonclassical interference between independent intrinsically pure single photons at telecommunication wavelength,” Phys. Rev. A 87, 063801 (2013).
[CrossRef]

R.-B. Jin, R. Shimizu, K. Wakui, H. Benichi, and M. Sasaki, “Widely tunable single photon source with high purity at telecom wavelength,” Opt. Express 21, 10659 (2013).
[CrossRef] [PubMed]

Scarani, V.

M. Halder, A. Beveratos, N. Gisin, V. Scarani, C. Simon, and H. Zbinden, “Entangling independent photons by time measurement,” Nat. Phys. 3, 692–695 (2007).
[CrossRef]

Schaake, J.

P. Evans, R. Bennink, W. Grice, T. Humble, and J. Schaake, “Bright Source of Spectrally Uncorrelated Polarization-Entangled Photons with Nearly Single-Mode Emission,” Phys. Rev. Lett. 105, 253601 (2010).
[CrossRef]

Sekatski, P.

P. Sekatski, N. Sangouard, F. Bussières, C. Clausen, N. Gisin, and H. Zbinden, “Detector imperfections in photon-pair source characterization,” J. Phys. B: At., Mol. Opt. Phys. 45, 124016 (2012).
[CrossRef]

Shimizu, R.

R.-B. Jin, R. Shimizu, K. Wakui, H. Benichi, and M. Sasaki, “Widely tunable single photon source with high purity at telecom wavelength,” Opt. Express 21, 10659 (2013).
[CrossRef] [PubMed]

R. Jin, K. Wakui, R. Shimizu, H. Benichi, S. Miki, T. Yamashita, H. Terai, Z. Wang, M. Fujiwara, and M. Sasaki, “Nonclassical interference between independent intrinsically pure single photons at telecommunication wavelength,” Phys. Rev. A 87, 063801 (2013).
[CrossRef]

M. Yabuno, R. Shimizu, Y. Mitsumori, H. Kosaka, and K. Edamatsu, “Four-photon quantum interferometry at a telecom wavelength,” Phys. Rev. A 86, 010302 (2012).
[CrossRef]

K. Edamatsu, R. Shimizu, W. Ueno, R. Jin, F. Kanedas, M. Yabuno, H. Suzuki, S. Nagano, A. Syouji, and K. Suizu, “Photon pair sources with controlled frequency correlation,” Prog. Informatics 8, 19–26 (2011).
[CrossRef]

Silberhorn, C.

G. Harder, V. Ansari, B. Brecht, T. Dirmeier, C. Marquardt, and C. Silberhorn, “An optimized photon pair source for quantum circuits,” Opt. Express 21, 13975 (2013).
[CrossRef] [PubMed]

C. Söller, O. Cohen, B. J. Smith, I. A. Walmsley, and C. Silberhorn, “High-performance single-photon generation with commercial-grade optical fiber,” Phys. Rev. A 83, 1–4 (2011).
[CrossRef]

A. Christ, K. Laiho, A. Eckstein, K. N. Cassemiro, and C. Silberhorn, “Probing multimode squeezing with correlation functions,” New J. Phys. 13, 033027 (2011).
[CrossRef]

P. J. Mosley, J. S. Lundeen, B. J. Smith, P. Wasylczyk, A. B. U’Ren, C. Silberhorn, and I. A. Walmsley, “Heralded Generation of Ultrafast Single Photons in Pure Quantum States,” Phys. Rev. Lett. 100, 133601 (2008).
[CrossRef] [PubMed]

Simon, C.

M. Halder, A. Beveratos, N. Gisin, V. Scarani, C. Simon, and H. Zbinden, “Entangling independent photons by time measurement,” Nat. Phys. 3, 692–695 (2007).
[CrossRef]

Smith, B. J.

C. Söller, O. Cohen, B. J. Smith, I. A. Walmsley, and C. Silberhorn, “High-performance single-photon generation with commercial-grade optical fiber,” Phys. Rev. A 83, 1–4 (2011).
[CrossRef]

P. J. Mosley, J. S. Lundeen, B. J. Smith, and I. A. Walmsley, “Conditional preparation of single photons using parametric downconversion: a recipe for purity,” New J. Phys. 10, 093011 (2008).
[CrossRef]

P. J. Mosley, J. S. Lundeen, B. J. Smith, P. Wasylczyk, A. B. U’Ren, C. Silberhorn, and I. A. Walmsley, “Heralded Generation of Ultrafast Single Photons in Pure Quantum States,” Phys. Rev. Lett. 100, 133601 (2008).
[CrossRef] [PubMed]

Söller, C.

C. Söller, O. Cohen, B. J. Smith, I. A. Walmsley, and C. Silberhorn, “High-performance single-photon generation with commercial-grade optical fiber,” Phys. Rev. A 83, 1–4 (2011).
[CrossRef]

Spring, J. B.

Suizu, K.

K. Edamatsu, R. Shimizu, W. Ueno, R. Jin, F. Kanedas, M. Yabuno, H. Suzuki, S. Nagano, A. Syouji, and K. Suizu, “Photon pair sources with controlled frequency correlation,” Prog. Informatics 8, 19–26 (2011).
[CrossRef]

Suzuki, H.

K. Edamatsu, R. Shimizu, W. Ueno, R. Jin, F. Kanedas, M. Yabuno, H. Suzuki, S. Nagano, A. Syouji, and K. Suizu, “Photon pair sources with controlled frequency correlation,” Prog. Informatics 8, 19–26 (2011).
[CrossRef]

Syouji, A.

K. Edamatsu, R. Shimizu, W. Ueno, R. Jin, F. Kanedas, M. Yabuno, H. Suzuki, S. Nagano, A. Syouji, and K. Suizu, “Photon pair sources with controlled frequency correlation,” Prog. Informatics 8, 19–26 (2011).
[CrossRef]

Tanzilli, S.

A. Martin, O. Alibart, M. P. De Micheli, D. B. Ostrowsky, and S. Tanzilli, “A quantum relay chip based on telecommunication integrated optics technology,” New J. Phys. 14, 025002 (2012).
[CrossRef]

S. Tanzilli, A. Martin, F. Kaiser, M. P. De Micheli, O. Alibart, and D. B. Ostrowsky, “On the genesis and evolution of Integrated Quantum Optics,” Laser Photonics Rev. 6, 115–143 (2012).
[CrossRef]

Tapster, P. R.

P. R. Tapster and J. G. Rarity, “Photon statistics of pulsed parametric light,” J. Mod. Opt. 45, 595–604 (1998).
[CrossRef]

Tengner, M.

D. Ljunggren and M. Tengner, “Optimal focusing for maximal collection of entangled narrow-band photon pairs into single-mode fibers,” Phys. Rev. A 72, 062301 (2005).
[CrossRef]

Terai, H.

R. Ikuta, T. Kobayashi, H. Kato, S. Miki, T. Yamashita, H. Terai, M. Fujiwara, T. Yamamoto, M. Koashi, M. Sasaki, Z. Wang, and N. Imoto, “Nonclassical two-photon interference between independent telecommunication light pulses converted by difference-frequency generation,” Phys. Rev. A 88, 042317 (2013).
[CrossRef]

R. Jin, K. Wakui, R. Shimizu, H. Benichi, S. Miki, T. Yamashita, H. Terai, Z. Wang, M. Fujiwara, and M. Sasaki, “Nonclassical interference between independent intrinsically pure single photons at telecommunication wavelength,” Phys. Rev. A 87, 063801 (2013).
[CrossRef]

Thew, R.

N. Gisin and R. Thew, “Quantum communication,” Nat. Photonics 1, 165 (2007).
[CrossRef]

Thew, R. T.

C. I. Osorio, N. Sangouard, and R. T. Thew, “On the purity and indistinguishability of down-converted photons,” J. Phys. B: At. Mol. Opt. Phys 46, 055501 (2013).
[CrossRef]

T. Guerreiro, A. Martin, B. Sanguinetti, N. Bruno, H. Zbinden, and R. T. Thew, “High efficiency coupling of photon pairs in practice,” Opt. Express 21, 27641–27651 (2013).
[CrossRef]

N. Bruno, A. Martin, and R. T. Thew, “Generation of tunable wavelength coherent states and heralded single photons for quantum optics applications,” arXiv:1309.6172 p. 5 (2013).

Thomas-Peter, N.

Tittel, W.

H. de Riedmatten, I. Marcikic, J. A. W. van Houwelingen, W. Tittel, H. Zbinden, and N. Gisin, “Long-distance entanglement swapping with photons from separated sources,” Phys. Rev. A 71, 050302 (2005).
[CrossRef]

Twiss, R. Q.

R. Hanbury Brown and R. Q. Twiss, “Correlation between Photons in two Coherent Beams of Light,” Nature 177, 27–29 (1956).
[CrossRef]

U’ren, A.

W. Grice, A. U’ren, and I. Walmsley, “Eliminating frequency and space-time correlations in multiphoton states,” Phys. Rev. A 64, 063815 (2001).
[CrossRef]

U’Ren, A. B.

P. J. Mosley, J. S. Lundeen, B. J. Smith, P. Wasylczyk, A. B. U’Ren, C. Silberhorn, and I. A. Walmsley, “Heralded Generation of Ultrafast Single Photons in Pure Quantum States,” Phys. Rev. Lett. 100, 133601 (2008).
[CrossRef] [PubMed]

Ueno, W.

K. Edamatsu, R. Shimizu, W. Ueno, R. Jin, F. Kanedas, M. Yabuno, H. Suzuki, S. Nagano, A. Syouji, and K. Suizu, “Photon pair sources with controlled frequency correlation,” Prog. Informatics 8, 19–26 (2011).
[CrossRef]

van Houwelingen, J. A. W.

H. de Riedmatten, I. Marcikic, J. A. W. van Houwelingen, W. Tittel, H. Zbinden, and N. Gisin, “Long-distance entanglement swapping with photons from separated sources,” Phys. Rev. A 71, 050302 (2005).
[CrossRef]

Wadsworth, W. J.

J. Fulconis, O. Alibart, J. L. O’Brien, W. J. Wadsworth, and J. G. Rarity, “Nonclassical Interference and Entanglement Generation Using a Photonic Crystal Fiber Pair Photon Source,” Phys. Rev. Lett. 99, 120501 (2007).
[CrossRef] [PubMed]

Wakui, K.

R. Jin, K. Wakui, R. Shimizu, H. Benichi, S. Miki, T. Yamashita, H. Terai, Z. Wang, M. Fujiwara, and M. Sasaki, “Nonclassical interference between independent intrinsically pure single photons at telecommunication wavelength,” Phys. Rev. A 87, 063801 (2013).
[CrossRef]

R.-B. Jin, R. Shimizu, K. Wakui, H. Benichi, and M. Sasaki, “Widely tunable single photon source with high purity at telecom wavelength,” Opt. Express 21, 10659 (2013).
[CrossRef] [PubMed]

Walmsley, I.

W. Grice, A. U’ren, and I. Walmsley, “Eliminating frequency and space-time correlations in multiphoton states,” Phys. Rev. A 64, 063815 (2001).
[CrossRef]

Walmsley, I. A.

J. B. Spring, P. S. Salter, B. J. Metcalf, P. C. Humphreys, M. Moore, N. Thomas-Peter, M. Barbieri, X.-M. Jin, N. K. Langford, W. S. Kolthammer, M. J. Booth, and I. A. Walmsley, “On-chip low loss heralded source of pure single photons,” Opt. Express 21, 13522 (2013).
[CrossRef] [PubMed]

C. Söller, O. Cohen, B. J. Smith, I. A. Walmsley, and C. Silberhorn, “High-performance single-photon generation with commercial-grade optical fiber,” Phys. Rev. A 83, 1–4 (2011).
[CrossRef]

P. J. Mosley, J. S. Lundeen, B. J. Smith, P. Wasylczyk, A. B. U’Ren, C. Silberhorn, and I. A. Walmsley, “Heralded Generation of Ultrafast Single Photons in Pure Quantum States,” Phys. Rev. Lett. 100, 133601 (2008).
[CrossRef] [PubMed]

P. J. Mosley, J. S. Lundeen, B. J. Smith, and I. A. Walmsley, “Conditional preparation of single photons using parametric downconversion: a recipe for purity,” New J. Phys. 10, 093011 (2008).
[CrossRef]

Walther, P.

A. Aspuru-Guzik and P. Walther, “Photonic quantum simulators,” Nat. Phys. 8, 285–291 (2012).
[CrossRef]

Wang, Z.

R. Jin, K. Wakui, R. Shimizu, H. Benichi, S. Miki, T. Yamashita, H. Terai, Z. Wang, M. Fujiwara, and M. Sasaki, “Nonclassical interference between independent intrinsically pure single photons at telecommunication wavelength,” Phys. Rev. A 87, 063801 (2013).
[CrossRef]

R. Ikuta, T. Kobayashi, H. Kato, S. Miki, T. Yamashita, H. Terai, M. Fujiwara, T. Yamamoto, M. Koashi, M. Sasaki, Z. Wang, and N. Imoto, “Nonclassical two-photon interference between independent telecommunication light pulses converted by difference-frequency generation,” Phys. Rev. A 88, 042317 (2013).
[CrossRef]

Wasylczyk, P.

P. J. Mosley, J. S. Lundeen, B. J. Smith, P. Wasylczyk, A. B. U’Ren, C. Silberhorn, and I. A. Walmsley, “Heralded Generation of Ultrafast Single Photons in Pure Quantum States,” Phys. Rev. Lett. 100, 133601 (2008).
[CrossRef] [PubMed]

Yabuno, M.

M. Yabuno, R. Shimizu, Y. Mitsumori, H. Kosaka, and K. Edamatsu, “Four-photon quantum interferometry at a telecom wavelength,” Phys. Rev. A 86, 010302 (2012).
[CrossRef]

K. Edamatsu, R. Shimizu, W. Ueno, R. Jin, F. Kanedas, M. Yabuno, H. Suzuki, S. Nagano, A. Syouji, and K. Suizu, “Photon pair sources with controlled frequency correlation,” Prog. Informatics 8, 19–26 (2011).
[CrossRef]

Yamamoto, T.

R. Ikuta, T. Kobayashi, H. Kato, S. Miki, T. Yamashita, H. Terai, M. Fujiwara, T. Yamamoto, M. Koashi, M. Sasaki, Z. Wang, and N. Imoto, “Nonclassical two-photon interference between independent telecommunication light pulses converted by difference-frequency generation,” Phys. Rev. A 88, 042317 (2013).
[CrossRef]

Yamashita, T.

R. Ikuta, T. Kobayashi, H. Kato, S. Miki, T. Yamashita, H. Terai, M. Fujiwara, T. Yamamoto, M. Koashi, M. Sasaki, Z. Wang, and N. Imoto, “Nonclassical two-photon interference between independent telecommunication light pulses converted by difference-frequency generation,” Phys. Rev. A 88, 042317 (2013).
[CrossRef]

R. Jin, K. Wakui, R. Shimizu, H. Benichi, S. Miki, T. Yamashita, H. Terai, Z. Wang, M. Fujiwara, and M. Sasaki, “Nonclassical interference between independent intrinsically pure single photons at telecommunication wavelength,” Phys. Rev. A 87, 063801 (2013).
[CrossRef]

Zbinden, H.

T. Guerreiro, A. Martin, B. Sanguinetti, N. Bruno, H. Zbinden, and R. T. Thew, “High efficiency coupling of photon pairs in practice,” Opt. Express 21, 27641–27651 (2013).
[CrossRef]

P. Sekatski, N. Sangouard, F. Bussières, C. Clausen, N. Gisin, and H. Zbinden, “Detector imperfections in photon-pair source characterization,” J. Phys. B: At., Mol. Opt. Phys. 45, 124016 (2012).
[CrossRef]

M. Halder, A. Beveratos, N. Gisin, V. Scarani, C. Simon, and H. Zbinden, “Entangling independent photons by time measurement,” Nat. Phys. 3, 692–695 (2007).
[CrossRef]

H. de Riedmatten, I. Marcikic, J. A. W. van Houwelingen, W. Tittel, H. Zbinden, and N. Gisin, “Long-distance entanglement swapping with photons from separated sources,” Phys. Rev. A 71, 050302 (2005).
[CrossRef]

Zeilinger, A.

R. Kaltenbaek, R. Prevedel, M. Aspelmeyer, and A. Zeilinger, “High-fidelity entanglement swapping with fully independent sources,” Phys. Rev. A 79, 040302 (2009).
[CrossRef]

IEEE J. Quantum Electron. (1)

M. Fejer, G. Magel, D. H. Jundt, and R. Byer, “Quasi-phase-matched second harmonic generation: tuning and tolerances,” IEEE J. Quantum Electron. 28, 2631–2654 (1992).
[CrossRef]

J. Mod. Opt. (1)

P. R. Tapster and J. G. Rarity, “Photon statistics of pulsed parametric light,” J. Mod. Opt. 45, 595–604 (1998).
[CrossRef]

J. Phys. B: At. Mol. Opt. Phys (1)

C. I. Osorio, N. Sangouard, and R. T. Thew, “On the purity and indistinguishability of down-converted photons,” J. Phys. B: At. Mol. Opt. Phys 46, 055501 (2013).
[CrossRef]

J. Phys. B: At., Mol. Opt. Phys. (1)

P. Sekatski, N. Sangouard, F. Bussières, C. Clausen, N. Gisin, and H. Zbinden, “Detector imperfections in photon-pair source characterization,” J. Phys. B: At., Mol. Opt. Phys. 45, 124016 (2012).
[CrossRef]

Laser Photonics Rev. (1)

S. Tanzilli, A. Martin, F. Kaiser, M. P. De Micheli, O. Alibart, and D. B. Ostrowsky, “On the genesis and evolution of Integrated Quantum Optics,” Laser Photonics Rev. 6, 115–143 (2012).
[CrossRef]

Nat. Photonics (1)

N. Gisin and R. Thew, “Quantum communication,” Nat. Photonics 1, 165 (2007).
[CrossRef]

Nat. Phys. (2)

A. Aspuru-Guzik and P. Walther, “Photonic quantum simulators,” Nat. Phys. 8, 285–291 (2012).
[CrossRef]

M. Halder, A. Beveratos, N. Gisin, V. Scarani, C. Simon, and H. Zbinden, “Entangling independent photons by time measurement,” Nat. Phys. 3, 692–695 (2007).
[CrossRef]

Nature (2)

H. J. Kimble, “The quantum internet,” Nature 453, 1023–1030 (2008).
[CrossRef] [PubMed]

R. Hanbury Brown and R. Q. Twiss, “Correlation between Photons in two Coherent Beams of Light,” Nature 177, 27–29 (1956).
[CrossRef]

New J. Phys. (3)

A. Christ, K. Laiho, A. Eckstein, K. N. Cassemiro, and C. Silberhorn, “Probing multimode squeezing with correlation functions,” New J. Phys. 13, 033027 (2011).
[CrossRef]

A. Martin, O. Alibart, M. P. De Micheli, D. B. Ostrowsky, and S. Tanzilli, “A quantum relay chip based on telecommunication integrated optics technology,” New J. Phys. 14, 025002 (2012).
[CrossRef]

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[CrossRef]

Opt. Express (4)

Opt. Lett. (1)

Phys. Rev. A (8)

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[CrossRef]

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[CrossRef]

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[CrossRef]

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[CrossRef]

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[CrossRef]

R. Ikuta, T. Kobayashi, H. Kato, S. Miki, T. Yamashita, H. Terai, M. Fujiwara, T. Yamamoto, M. Koashi, M. Sasaki, Z. Wang, and N. Imoto, “Nonclassical two-photon interference between independent telecommunication light pulses converted by difference-frequency generation,” Phys. Rev. A 88, 042317 (2013).
[CrossRef]

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[CrossRef]

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[CrossRef] [PubMed]

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[CrossRef]

Prog. Informatics (1)

K. Edamatsu, R. Shimizu, W. Ueno, R. Jin, F. Kanedas, M. Yabuno, H. Suzuki, S. Nagano, A. Syouji, and K. Suizu, “Photon pair sources with controlled frequency correlation,” Prog. Informatics 8, 19–26 (2011).
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Figures (5)

Fig. 1
Fig. 1

Numerical simulation of the photon pair spectral purity (red curve) and signal spatial-spectral purity (blue curve) for a 3 cm long PPKTP bulk crystal pumped by a 772 nm pump laser with a bandwidth of 467 rad−1 GHz.

Fig. 2
Fig. 2

a) Experimental setup. A 772nm ps-pulsed laser pumps a periodically poled potassium titanylphosphate (PPKTP) crystal in a double-pass configuration. Dichroic mirrors (D) separate the telecom and visible wavelengths. A variable delay is placed before the second passage of the pump laser through the crystal. The generated photon pairs are first collimated by a set of lenses (L) and then separated with polarising beam-splitters (PBS) and coupled into single mode fibres. Three characterisation techniques are shown: b) the joint spectral intensity; c) the second order autocorrelation function g2(τ), and d) Hong-Ou-Mandel (HOM) interference.

Fig. 3
Fig. 3

g(2)(0) as a function of the laser pump FWHM. The point and the line represent the experimental data and the simulation predications, respectively.

Fig. 4
Fig. 4

Joint spectral intensity. The simulation (a) (the JSI is given by the square of the joint spectral amplitude described in Eq. (7)) and experimental results (b) for the configuration described in the text.

Fig. 5
Fig. 5

HOM dips obtained between signal-signal (a) and signal-idler photons from independent sources as a function of the delay between the photons. The blue and black points represent the four-fold coincidences and accidental coincidences, respectively. For both configurations a visibility of 91 ± 2% is obtained.

Equations (9)

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ω p = ω i + ω s ; k p = k i + k s + 2 π Λ z
H = c d ω s d ω i d k s d k i d k p S ( ω s , ω i , k s , k i , k p ) a ( ω s , k s ) a ( ω i , k i ) + h . c . .
ε ( ω s , ω i ) sech [ ( ω i + ω s + ω p ) 3 π 2 log ( 2 + 3 ) Δ ω p ]
ε ( ω s , ω i ) exp ( ω i + ω s ω p 4 σ p 2 )
ϕ ( ω s , ω i , k s , k i , k p ) sinc [ L 2 k i ( ω i ) + k s ( ω s ) + 2 π Λ k p ( ω p ) ] .
ϕ ( ω s , ω i ) exp ( α 2 Δ k 2 L 2 4 ) ,
S ( Δ ω s , Δ ω i ) = ε ( ω s , ω i ) φ ( ω s , ω i ) exp [ ( 1 σ p 2 + α 2 L 2 ( k p k s ) 2 ) Δ ω s 2 4 ( 1 σ p 2 + α 2 L 2 ( k p k i ) 2 ) Δ ω i 2 4 ( 1 σ p 2 + α 2 L 2 ( k p k s ) ( k p k i ) ) Δ ω s Δ ω i 2 ] ,
α 2 L 2 σ p 2 ( k p k s ) ( k p k i ) = 1 .
V = Tr [ ρ a ρ b ] = Tr [ ρ a 2 ] + Tr [ ρ b 2 ] ρ a ρ b 2 ,

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