K. Karstad, A. Stefanov, M. Wegmuller, H. Zbinden, N. Gisin, T. Aellen, M. Beck, and J. Faist, "Detection of mid-IR radiation by sum frequency generation for free space optical communication," Opt. Lasers Eng. 43, 537-544 (2005).

[CrossRef]

S. Tanzilli, W. Tittel, M. Halder, O. Alibart, P. Baldi, N. Gisin, and H. Zbinden, "A photonic quantum information interface," Nature 437, 116-120 (2005).

[CrossRef]
[PubMed]

D. T. Pegg and J. Jeffers, "Quantum nature of laser light," J. Mod. Opt. 52, 1835-1856 (2005).

[CrossRef]

J. T. Barreiro, N. K. Langford, N. A. Peters, and P. G. Kwiat, "Generation of hyperentangled photon pairs," Phys. Rev. Lett. 95, 260501 (2005).

[CrossRef]

C. Wang, F. G. Deng, Y. S. Li, X. S. Liu, and G. L. Long, "Quantum secure direct communication with high-dimension quantum superdense coding," Phys. Rev. A 71, 044305 (2005).

[CrossRef]

D. A. Farías and J. N. Eckstein, "Dynamic electrooptic frequency shifter for pulsed light signals," IEEE J. Quantum Electron. 41, 94-99 (2005).

[CrossRef]

C. Langrock, E. Diamanti, R. V. Roussev, Y. Yamamoto, and M. M. Fejer, "Highly efficient single-photon detection at communication wavelengths by use of upconversion in reverse-proton-exchanged periodically poled LiNbO_{3} waveguides," Opt. Lett. 30, 1725-1727 (2005).

[CrossRef]
[PubMed]

M. A. Albota and F. N. C. Wong, "Efficient single-photon counting at 1.55 μm by means of frequency upconversion," Opt. Lett. 29, 1449-1451 (2004).

[CrossRef]
[PubMed]

R. V. Roussev, C. Langrock, J. R. Kurz, and M. M. Fejer, "Periodically poled lithium niobate waveguide sum-frequency generator for efficient single-photon detection at communication wavelengths," Opt. Lett. 29, 1518-1520 (2004).

[CrossRef]
[PubMed]

A. P. VanDevender and P. G. Kwiat, "High efficiency single photon detection via frequency up-conversion," J. Mod. Opt. 51, 1433-1445 (2004).

[CrossRef]

G. Giorgi, P. Mataloni, and F. De Martini, "Frequency hopping in quantum interferometry: efficient up-down conversion for qubits and ebits," Phys. Rev. Lett. 90, 027902 (2003).

[CrossRef]
[PubMed]

K. Inoue, E. Waks, and Y. Yamamoto, "Differential phase shift quantum key distribution," Phys. Rev. Lett. 89, 037902 (2002).

[CrossRef]
[PubMed]

N. Gisin, G. Ribordy, W. Tittel, and H. Zbinden, "Quantum cryptography," Rev. Mod. Phys. 74, 145-195 (2002).

[CrossRef]

D. Stucki, N. G. O. Guinnard, G. Ribordy, and H. Zbinden, "Quantum key distribution over 67 km with a plug&play system," New J. Phys. 4, 41.1-41.8 (2002).

[CrossRef]

R. Schanz, S. A. Kovalenko, V. Kharlanov, and N. P. Ernsting, "Broad-band fluorescence upconversion for femtosecond spectroscopy," Appl. Phys. Lett. 79, 566-568 (2001).

[CrossRef]

R. J. Hughes, G. L. Morgan, and C. G. Peterson, "Quantum key distribution over a 48-km optical fiber network," J. Mod. Opt. 47, 533-547 (2000).

[CrossRef]

L. E. Myers, R. C. Eckardt, M. M. Fejer, R. L. Byer, W. R. Bosenberg, and J. W. Pierce, "Quasi-phase-matched optical parametric oscillators in bulk periodically poled LiNbO3," J. Opt. Soc. Am. B 12, 2102-2116 (1995).

[CrossRef]

F. V. Bright, "Modern molecular fluorescence spectroscopy," Appl. Spectrosc. 49, 14A-19A (1995).

[CrossRef]

J. Huang and P. Kumar, "Observation of quantum frequency conversion," Phys. Rev. Lett. 68, 2153-2156 (1992).

[CrossRef]
[PubMed]

J. Warner, "Spatial resolution measurements in up-conversion from 10.6 μm to the visible," Appl. Phys. Lett. 13, 360-362 (1968).

[CrossRef]

G. D. Boyd and D. A. Kleinman, "Parametric interaction of focused Gaussian light beams," J. Appl. Phys. 39, 3597-3639 (1968).

[CrossRef]

J. E. Midwinter, "Image conversion from 1.6 μm to the visible in lithium niobate," Appl. Phys. Lett. 12, 68-70 (1968).

[CrossRef]

J. A. Armstrong, N. Bloembergen, J. Ducuing, and P. S. Pershan, "Interactions between light waves in a nonlinear dielectric," Phys. Rev. 127, 1918-1939 (1962).

[CrossRef]

K. Karstad, A. Stefanov, M. Wegmuller, H. Zbinden, N. Gisin, T. Aellen, M. Beck, and J. Faist, "Detection of mid-IR radiation by sum frequency generation for free space optical communication," Opt. Lasers Eng. 43, 537-544 (2005).

[CrossRef]

S. Tanzilli, W. Tittel, M. Halder, O. Alibart, P. Baldi, N. Gisin, and H. Zbinden, "A photonic quantum information interface," Nature 437, 116-120 (2005).

[CrossRef]
[PubMed]

J. A. Armstrong, N. Bloembergen, J. Ducuing, and P. S. Pershan, "Interactions between light waves in a nonlinear dielectric," Phys. Rev. 127, 1918-1939 (1962).

[CrossRef]

S. Tanzilli, W. Tittel, M. Halder, O. Alibart, P. Baldi, N. Gisin, and H. Zbinden, "A photonic quantum information interface," Nature 437, 116-120 (2005).

[CrossRef]
[PubMed]

J. T. Barreiro, N. K. Langford, N. A. Peters, and P. G. Kwiat, "Generation of hyperentangled photon pairs," Phys. Rev. Lett. 95, 260501 (2005).

[CrossRef]

K. Karstad, A. Stefanov, M. Wegmuller, H. Zbinden, N. Gisin, T. Aellen, M. Beck, and J. Faist, "Detection of mid-IR radiation by sum frequency generation for free space optical communication," Opt. Lasers Eng. 43, 537-544 (2005).

[CrossRef]

J. A. Armstrong, N. Bloembergen, J. Ducuing, and P. S. Pershan, "Interactions between light waves in a nonlinear dielectric," Phys. Rev. 127, 1918-1939 (1962).

[CrossRef]

G. D. Boyd and D. A. Kleinman, "Parametric interaction of focused Gaussian light beams," J. Appl. Phys. 39, 3597-3639 (1968).

[CrossRef]

M. A. Nielsen and I. L. Chuang, Quantum Computation and Quantum Information (Cambridge U. Press, 2000).

G. Giorgi, P. Mataloni, and F. De Martini, "Frequency hopping in quantum interferometry: efficient up-down conversion for qubits and ebits," Phys. Rev. Lett. 90, 027902 (2003).

[CrossRef]
[PubMed]

C. Wang, F. G. Deng, Y. S. Li, X. S. Liu, and G. L. Long, "Quantum secure direct communication with high-dimension quantum superdense coding," Phys. Rev. A 71, 044305 (2005).

[CrossRef]

J. A. Armstrong, N. Bloembergen, J. Ducuing, and P. S. Pershan, "Interactions between light waves in a nonlinear dielectric," Phys. Rev. 127, 1918-1939 (1962).

[CrossRef]

D. A. Farías and J. N. Eckstein, "Dynamic electrooptic frequency shifter for pulsed light signals," IEEE J. Quantum Electron. 41, 94-99 (2005).

[CrossRef]

R. Schanz, S. A. Kovalenko, V. Kharlanov, and N. P. Ernsting, "Broad-band fluorescence upconversion for femtosecond spectroscopy," Appl. Phys. Lett. 79, 566-568 (2001).

[CrossRef]

K. Karstad, A. Stefanov, M. Wegmuller, H. Zbinden, N. Gisin, T. Aellen, M. Beck, and J. Faist, "Detection of mid-IR radiation by sum frequency generation for free space optical communication," Opt. Lasers Eng. 43, 537-544 (2005).

[CrossRef]

D. A. Farías and J. N. Eckstein, "Dynamic electrooptic frequency shifter for pulsed light signals," IEEE J. Quantum Electron. 41, 94-99 (2005).

[CrossRef]

C. Langrock, E. Diamanti, R. V. Roussev, Y. Yamamoto, and M. M. Fejer, "Highly efficient single-photon detection at communication wavelengths by use of upconversion in reverse-proton-exchanged periodically poled LiNbO_{3} waveguides," Opt. Lett. 30, 1725-1727 (2005).

[CrossRef]
[PubMed]

R. V. Roussev, C. Langrock, J. R. Kurz, and M. M. Fejer, "Periodically poled lithium niobate waveguide sum-frequency generator for efficient single-photon detection at communication wavelengths," Opt. Lett. 29, 1518-1520 (2004).

[CrossRef]
[PubMed]

L. E. Myers, R. C. Eckardt, M. M. Fejer, R. L. Byer, W. R. Bosenberg, and J. W. Pierce, "Quasi-phase-matched optical parametric oscillators in bulk periodically poled LiNbO3," J. Opt. Soc. Am. B 12, 2102-2116 (1995).

[CrossRef]

G. Giorgi, P. Mataloni, and F. De Martini, "Frequency hopping in quantum interferometry: efficient up-down conversion for qubits and ebits," Phys. Rev. Lett. 90, 027902 (2003).

[CrossRef]
[PubMed]

K. Karstad, A. Stefanov, M. Wegmuller, H. Zbinden, N. Gisin, T. Aellen, M. Beck, and J. Faist, "Detection of mid-IR radiation by sum frequency generation for free space optical communication," Opt. Lasers Eng. 43, 537-544 (2005).

[CrossRef]

S. Tanzilli, W. Tittel, M. Halder, O. Alibart, P. Baldi, N. Gisin, and H. Zbinden, "A photonic quantum information interface," Nature 437, 116-120 (2005).

[CrossRef]
[PubMed]

N. Gisin, G. Ribordy, W. Tittel, and H. Zbinden, "Quantum cryptography," Rev. Mod. Phys. 74, 145-195 (2002).

[CrossRef]

D. Stucki, N. G. O. Guinnard, G. Ribordy, and H. Zbinden, "Quantum key distribution over 67 km with a plug&play system," New J. Phys. 4, 41.1-41.8 (2002).

[CrossRef]

S. Tanzilli, W. Tittel, M. Halder, O. Alibart, P. Baldi, N. Gisin, and H. Zbinden, "A photonic quantum information interface," Nature 437, 116-120 (2005).

[CrossRef]
[PubMed]

J. Huang and P. Kumar, "Observation of quantum frequency conversion," Phys. Rev. Lett. 68, 2153-2156 (1992).

[CrossRef]
[PubMed]

R. J. Hughes, G. L. Morgan, and C. G. Peterson, "Quantum key distribution over a 48-km optical fiber network," J. Mod. Opt. 47, 533-547 (2000).

[CrossRef]

K. Inoue, E. Waks, and Y. Yamamoto, "Differential phase shift quantum key distribution," Phys. Rev. Lett. 89, 037902 (2002).

[CrossRef]
[PubMed]

D. T. Pegg and J. Jeffers, "Quantum nature of laser light," J. Mod. Opt. 52, 1835-1856 (2005).

[CrossRef]

K. Karstad, A. Stefanov, M. Wegmuller, H. Zbinden, N. Gisin, T. Aellen, M. Beck, and J. Faist, "Detection of mid-IR radiation by sum frequency generation for free space optical communication," Opt. Lasers Eng. 43, 537-544 (2005).

[CrossRef]

R. Schanz, S. A. Kovalenko, V. Kharlanov, and N. P. Ernsting, "Broad-band fluorescence upconversion for femtosecond spectroscopy," Appl. Phys. Lett. 79, 566-568 (2001).

[CrossRef]

G. D. Boyd and D. A. Kleinman, "Parametric interaction of focused Gaussian light beams," J. Appl. Phys. 39, 3597-3639 (1968).

[CrossRef]

R. Schanz, S. A. Kovalenko, V. Kharlanov, and N. P. Ernsting, "Broad-band fluorescence upconversion for femtosecond spectroscopy," Appl. Phys. Lett. 79, 566-568 (2001).

[CrossRef]

J. Huang and P. Kumar, "Observation of quantum frequency conversion," Phys. Rev. Lett. 68, 2153-2156 (1992).

[CrossRef]
[PubMed]

J. T. Barreiro, N. K. Langford, N. A. Peters, and P. G. Kwiat, "Generation of hyperentangled photon pairs," Phys. Rev. Lett. 95, 260501 (2005).

[CrossRef]

A. P. VanDevender and P. G. Kwiat, "High efficiency single photon detection via frequency up-conversion," J. Mod. Opt. 51, 1433-1445 (2004).

[CrossRef]

J. T. Barreiro, N. K. Langford, N. A. Peters, and P. G. Kwiat, "Generation of hyperentangled photon pairs," Phys. Rev. Lett. 95, 260501 (2005).

[CrossRef]

C. Langrock, E. Diamanti, R. V. Roussev, Y. Yamamoto, and M. M. Fejer, "Highly efficient single-photon detection at communication wavelengths by use of upconversion in reverse-proton-exchanged periodically poled LiNbO_{3} waveguides," Opt. Lett. 30, 1725-1727 (2005).

[CrossRef]
[PubMed]

R. V. Roussev, C. Langrock, J. R. Kurz, and M. M. Fejer, "Periodically poled lithium niobate waveguide sum-frequency generator for efficient single-photon detection at communication wavelengths," Opt. Lett. 29, 1518-1520 (2004).

[CrossRef]
[PubMed]

C. Wang, F. G. Deng, Y. S. Li, X. S. Liu, and G. L. Long, "Quantum secure direct communication with high-dimension quantum superdense coding," Phys. Rev. A 71, 044305 (2005).

[CrossRef]

C. Wang, F. G. Deng, Y. S. Li, X. S. Liu, and G. L. Long, "Quantum secure direct communication with high-dimension quantum superdense coding," Phys. Rev. A 71, 044305 (2005).

[CrossRef]

C. Wang, F. G. Deng, Y. S. Li, X. S. Liu, and G. L. Long, "Quantum secure direct communication with high-dimension quantum superdense coding," Phys. Rev. A 71, 044305 (2005).

[CrossRef]

G. Giorgi, P. Mataloni, and F. De Martini, "Frequency hopping in quantum interferometry: efficient up-down conversion for qubits and ebits," Phys. Rev. Lett. 90, 027902 (2003).

[CrossRef]
[PubMed]

J. E. Midwinter, "Image conversion from 1.6 μm to the visible in lithium niobate," Appl. Phys. Lett. 12, 68-70 (1968).

[CrossRef]

R. J. Hughes, G. L. Morgan, and C. G. Peterson, "Quantum key distribution over a 48-km optical fiber network," J. Mod. Opt. 47, 533-547 (2000).

[CrossRef]

M. A. Nielsen and I. L. Chuang, Quantum Computation and Quantum Information (Cambridge U. Press, 2000).

D. T. Pegg and J. Jeffers, "Quantum nature of laser light," J. Mod. Opt. 52, 1835-1856 (2005).

[CrossRef]

J. A. Armstrong, N. Bloembergen, J. Ducuing, and P. S. Pershan, "Interactions between light waves in a nonlinear dielectric," Phys. Rev. 127, 1918-1939 (1962).

[CrossRef]

J. T. Barreiro, N. K. Langford, N. A. Peters, and P. G. Kwiat, "Generation of hyperentangled photon pairs," Phys. Rev. Lett. 95, 260501 (2005).

[CrossRef]

R. J. Hughes, G. L. Morgan, and C. G. Peterson, "Quantum key distribution over a 48-km optical fiber network," J. Mod. Opt. 47, 533-547 (2000).

[CrossRef]

D. Stucki, N. G. O. Guinnard, G. Ribordy, and H. Zbinden, "Quantum key distribution over 67 km with a plug&play system," New J. Phys. 4, 41.1-41.8 (2002).

[CrossRef]

N. Gisin, G. Ribordy, W. Tittel, and H. Zbinden, "Quantum cryptography," Rev. Mod. Phys. 74, 145-195 (2002).

[CrossRef]

C. Langrock, E. Diamanti, R. V. Roussev, Y. Yamamoto, and M. M. Fejer, "Highly efficient single-photon detection at communication wavelengths by use of upconversion in reverse-proton-exchanged periodically poled LiNbO_{3} waveguides," Opt. Lett. 30, 1725-1727 (2005).

[CrossRef]
[PubMed]

R. V. Roussev, C. Langrock, J. R. Kurz, and M. M. Fejer, "Periodically poled lithium niobate waveguide sum-frequency generator for efficient single-photon detection at communication wavelengths," Opt. Lett. 29, 1518-1520 (2004).

[CrossRef]
[PubMed]

R. Schanz, S. A. Kovalenko, V. Kharlanov, and N. P. Ernsting, "Broad-band fluorescence upconversion for femtosecond spectroscopy," Appl. Phys. Lett. 79, 566-568 (2001).

[CrossRef]

K. Karstad, A. Stefanov, M. Wegmuller, H. Zbinden, N. Gisin, T. Aellen, M. Beck, and J. Faist, "Detection of mid-IR radiation by sum frequency generation for free space optical communication," Opt. Lasers Eng. 43, 537-544 (2005).

[CrossRef]

D. Stucki, N. G. O. Guinnard, G. Ribordy, and H. Zbinden, "Quantum key distribution over 67 km with a plug&play system," New J. Phys. 4, 41.1-41.8 (2002).

[CrossRef]

S. Tanzilli, W. Tittel, M. Halder, O. Alibart, P. Baldi, N. Gisin, and H. Zbinden, "A photonic quantum information interface," Nature 437, 116-120 (2005).

[CrossRef]
[PubMed]

S. Tanzilli, W. Tittel, M. Halder, O. Alibart, P. Baldi, N. Gisin, and H. Zbinden, "A photonic quantum information interface," Nature 437, 116-120 (2005).

[CrossRef]
[PubMed]

N. Gisin, G. Ribordy, W. Tittel, and H. Zbinden, "Quantum cryptography," Rev. Mod. Phys. 74, 145-195 (2002).

[CrossRef]

A. P. VanDevender and P. G. Kwiat, "High efficiency single photon detection via frequency up-conversion," J. Mod. Opt. 51, 1433-1445 (2004).

[CrossRef]

K. Inoue, E. Waks, and Y. Yamamoto, "Differential phase shift quantum key distribution," Phys. Rev. Lett. 89, 037902 (2002).

[CrossRef]
[PubMed]

C. Wang, F. G. Deng, Y. S. Li, X. S. Liu, and G. L. Long, "Quantum secure direct communication with high-dimension quantum superdense coding," Phys. Rev. A 71, 044305 (2005).

[CrossRef]

K. Karstad, A. Stefanov, M. Wegmuller, H. Zbinden, N. Gisin, T. Aellen, M. Beck, and J. Faist, "Detection of mid-IR radiation by sum frequency generation for free space optical communication," Opt. Lasers Eng. 43, 537-544 (2005).

[CrossRef]

C. Langrock, E. Diamanti, R. V. Roussev, Y. Yamamoto, and M. M. Fejer, "Highly efficient single-photon detection at communication wavelengths by use of upconversion in reverse-proton-exchanged periodically poled LiNbO_{3} waveguides," Opt. Lett. 30, 1725-1727 (2005).

[CrossRef]
[PubMed]

K. Inoue, E. Waks, and Y. Yamamoto, "Differential phase shift quantum key distribution," Phys. Rev. Lett. 89, 037902 (2002).

[CrossRef]
[PubMed]

S. Tanzilli, W. Tittel, M. Halder, O. Alibart, P. Baldi, N. Gisin, and H. Zbinden, "A photonic quantum information interface," Nature 437, 116-120 (2005).

[CrossRef]
[PubMed]

K. Karstad, A. Stefanov, M. Wegmuller, H. Zbinden, N. Gisin, T. Aellen, M. Beck, and J. Faist, "Detection of mid-IR radiation by sum frequency generation for free space optical communication," Opt. Lasers Eng. 43, 537-544 (2005).

[CrossRef]

N. Gisin, G. Ribordy, W. Tittel, and H. Zbinden, "Quantum cryptography," Rev. Mod. Phys. 74, 145-195 (2002).

[CrossRef]

D. Stucki, N. G. O. Guinnard, G. Ribordy, and H. Zbinden, "Quantum key distribution over 67 km with a plug&play system," New J. Phys. 4, 41.1-41.8 (2002).

[CrossRef]

K. F. Hulme and J. Warner, "Theory of thermal imaging using infrared to visible image up-conversion," Appl. Opt. 11, 2956-2964 (1972).

[CrossRef]
[PubMed]

T. R. Gurski, H. W. Epps, and S. P. Maran, "Upconversion of broadband infrared spectra," Appl. Opt. 17, 1238-1242 (1978).

[CrossRef]
[PubMed]

M. M. Abbas, T. Kostiuk, and K. W. Ogilvie, "Infrared upconversion for astronomical applications," Appl. Opt. 15, 961-970 (1976).

[CrossRef]
[PubMed]

R. Schanz, S. A. Kovalenko, V. Kharlanov, and N. P. Ernsting, "Broad-band fluorescence upconversion for femtosecond spectroscopy," Appl. Phys. Lett. 79, 566-568 (2001).

[CrossRef]

J. Warner, "Spatial resolution measurements in up-conversion from 10.6 μm to the visible," Appl. Phys. Lett. 13, 360-362 (1968).

[CrossRef]

J. E. Midwinter, "Image conversion from 1.6 μm to the visible in lithium niobate," Appl. Phys. Lett. 12, 68-70 (1968).

[CrossRef]

D. A. Farías and J. N. Eckstein, "Dynamic electrooptic frequency shifter for pulsed light signals," IEEE J. Quantum Electron. 41, 94-99 (2005).

[CrossRef]

G. D. Boyd and D. A. Kleinman, "Parametric interaction of focused Gaussian light beams," J. Appl. Phys. 39, 3597-3639 (1968).

[CrossRef]

A. P. VanDevender and P. G. Kwiat, "High efficiency single photon detection via frequency up-conversion," J. Mod. Opt. 51, 1433-1445 (2004).

[CrossRef]

D. T. Pegg and J. Jeffers, "Quantum nature of laser light," J. Mod. Opt. 52, 1835-1856 (2005).

[CrossRef]

R. J. Hughes, G. L. Morgan, and C. G. Peterson, "Quantum key distribution over a 48-km optical fiber network," J. Mod. Opt. 47, 533-547 (2000).

[CrossRef]

S. Tanzilli, W. Tittel, M. Halder, O. Alibart, P. Baldi, N. Gisin, and H. Zbinden, "A photonic quantum information interface," Nature 437, 116-120 (2005).

[CrossRef]
[PubMed]

D. Stucki, N. G. O. Guinnard, G. Ribordy, and H. Zbinden, "Quantum key distribution over 67 km with a plug&play system," New J. Phys. 4, 41.1-41.8 (2002).

[CrossRef]

K. Karstad, A. Stefanov, M. Wegmuller, H. Zbinden, N. Gisin, T. Aellen, M. Beck, and J. Faist, "Detection of mid-IR radiation by sum frequency generation for free space optical communication," Opt. Lasers Eng. 43, 537-544 (2005).

[CrossRef]

C. Langrock, E. Diamanti, R. V. Roussev, Y. Yamamoto, and M. M. Fejer, "Highly efficient single-photon detection at communication wavelengths by use of upconversion in reverse-proton-exchanged periodically poled LiNbO_{3} waveguides," Opt. Lett. 30, 1725-1727 (2005).

[CrossRef]
[PubMed]

R. V. Roussev, C. Langrock, J. R. Kurz, and M. M. Fejer, "Periodically poled lithium niobate waveguide sum-frequency generator for efficient single-photon detection at communication wavelengths," Opt. Lett. 29, 1518-1520 (2004).

[CrossRef]
[PubMed]

M. A. Albota and F. N. C. Wong, "Efficient single-photon counting at 1.55 μm by means of frequency upconversion," Opt. Lett. 29, 1449-1451 (2004).

[CrossRef]
[PubMed]

J. A. Armstrong, N. Bloembergen, J. Ducuing, and P. S. Pershan, "Interactions between light waves in a nonlinear dielectric," Phys. Rev. 127, 1918-1939 (1962).

[CrossRef]

C. Wang, F. G. Deng, Y. S. Li, X. S. Liu, and G. L. Long, "Quantum secure direct communication with high-dimension quantum superdense coding," Phys. Rev. A 71, 044305 (2005).

[CrossRef]

J. T. Barreiro, N. K. Langford, N. A. Peters, and P. G. Kwiat, "Generation of hyperentangled photon pairs," Phys. Rev. Lett. 95, 260501 (2005).

[CrossRef]

J. Huang and P. Kumar, "Observation of quantum frequency conversion," Phys. Rev. Lett. 68, 2153-2156 (1992).

[CrossRef]
[PubMed]

K. Inoue, E. Waks, and Y. Yamamoto, "Differential phase shift quantum key distribution," Phys. Rev. Lett. 89, 037902 (2002).

[CrossRef]
[PubMed]

G. Giorgi, P. Mataloni, and F. De Martini, "Frequency hopping in quantum interferometry: efficient up-down conversion for qubits and ebits," Phys. Rev. Lett. 90, 027902 (2003).

[CrossRef]
[PubMed]

N. Gisin, G. Ribordy, W. Tittel, and H. Zbinden, "Quantum cryptography," Rev. Mod. Phys. 74, 145-195 (2002).

[CrossRef]

See MagiQ Technologies at http://www.magiqtech.com/.

See id Quantique at http://www.idquantique.com/.

M. A. Nielsen and I. L. Chuang, Quantum Computation and Quantum Information (Cambridge U. Press, 2000).