Abstract

We observed high-purity correlated and entangled photon pairs generated through spontaneous four-wave mixing (SFWM) in a silicon wire waveguide (SWW). Employing a nano-scale silicon waveguide with a low loss mode size converter, we obtained a high coincidence to accidental coincidence ratio (CAR) of around 200 that was larger than that of cooled dispersion shifted fiber (DSF) by a factor 3.2, and observed the two-photon interference fringe of time-bin entangled photons with >95% visibility without subtracting the accidental coincidences.

© 2008 Optical Society of America

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    [CrossRef] [PubMed]
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    [CrossRef]
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    [CrossRef]
  4. A. Yoshizawa, R. Kaji, and H. Tsuchida, "Generation of polarization-entangled photon pairs at 1550 nm using two PPLN waveguides," Electron. Lett. 39, 621-622 (2003).
    [CrossRef]
  5. H. Takesue, K. Inoue, O. Tadanaga, Y. Nishida, and M. Asobe, "Generation of pulsed polarization-entangled photon pairs in a 1.55-μm band with a periodically poled lithium niobate waveguide and an orthogonal polarization delay circuit," Opt. Lett. 30, 293-295 (2005).
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    [CrossRef] [PubMed]
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    [CrossRef]
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    [CrossRef] [PubMed]
  9. H. de Riedmatten, I. Marcikic, W. Tittel, H. Zbinden, and N. Gisin, "Quantum interference with photon pairs created in spatially separated sources," Phys. Rev. A 67, 022301 (2003).
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    [CrossRef] [PubMed]
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    [CrossRef]
  13. J. Sharping, K. F. Lee, M. A. Foster, A. C. Turner, B. S. Schmidt, M. Lipson, A. L. Gaeta, and P. Kumar, "Generation of correlated photons in nanoscale silicon waveguides," Opt. Express 14, 12388-12393 (2006).
    [CrossRef] [PubMed]
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    [CrossRef]
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    [CrossRef] [PubMed]
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    [CrossRef]

2008

2007

H. Takesue, Y. Tokura, H. Fukuda, T. Tsuchizawa, T. Watanabe, K. Yamada, and S. Itabashi, "Entanglement generation using silicon wire waveguide," Appl. Phys. Lett. 91, 201108 (2007).
[CrossRef]

P. Kok, W. J. Munro, K. Nemoto, T. C. Ralph, J. P. Dowling, and G. J. Milburn, "Linear optical quantum computing with photonic qubits," Rev. Mod. Phys. 79, 135-174 (2007).
[CrossRef]

Z. L. Yuan, B. E. Kardynal, A. W. Sharpe, and A. J. Shields, "High speed single photon detection in the near infrared," Appl. Phys. Lett. 91, 041114 (2007).
[CrossRef]

2006

J. Sharping, K. F. Lee, M. A. Foster, A. C. Turner, B. S. Schmidt, M. Lipson, A. L. Gaeta, and P. Kumar, "Generation of correlated photons in nanoscale silicon waveguides," Opt. Express 14, 12388-12393 (2006).
[CrossRef] [PubMed]

R. Kaltenbaek, B. Blauensteiner, M. Zukowski, M. Aspelmeyer, and A. Zeilinger, "Experimental interference of independent photons," Phys. Rev. Lett. 96, 240502 (2006).
[CrossRef] [PubMed]

2005

2004

2003

I. Marcikic, H. de Riedmatten, W. Tittel, H. Zbinden, N. Gisin, "Long-distance teleportation of qubits at telecommunication wavelengths," Nature 421, 509-513 (2003).
[CrossRef] [PubMed]

H. de Riedmatten, I. Marcikic, W. Tittel, H. Zbinden, and N. Gisin, "Quantum interference with photon pairs created in spatially separated sources," Phys. Rev. A 67, 022301 (2003).

A. Yoshizawa, R. Kaji, and H. Tsuchida, "Generation of polarization-entangled photon pairs at 1550 nm using two PPLN waveguides," Electron. Lett. 39, 621-622 (2003).
[CrossRef]

2002

E. Waks, A. Zeevi, and Y. Yamamoto, "Security of quantum key distribution with entangled photons against individual attacks," Phys. Rev. A 65, 052310 (2002).
[CrossRef]

R. Claps, D. Dimitropoulos, Y. Han, and B. Jalali, "Observation of Raman emission in silicon waveguides at 1.54 μm," Opt. Express 10, 1305-1313 (2002).
[PubMed]

T. Shoji, T. Tsuchizawa, T. Watanabe, K. Yamada, and H. Morita, "Low loss mode size converter from 0.3 μm square Si wire waveguides to singlemode fibres," Electron. Lett. 38, 1669-1670 (2002).
[CrossRef]

1991

A. K. Ekert, "Quantum cryptography based on Bell’s theorem," Phys. Rev. Lett. 67, 661-663 (1991).
[CrossRef] [PubMed]

Asobe, M.

Aspelmeyer, M.

R. Kaltenbaek, B. Blauensteiner, M. Zukowski, M. Aspelmeyer, and A. Zeilinger, "Experimental interference of independent photons," Phys. Rev. Lett. 96, 240502 (2006).
[CrossRef] [PubMed]

Blauensteiner, B.

R. Kaltenbaek, B. Blauensteiner, M. Zukowski, M. Aspelmeyer, and A. Zeilinger, "Experimental interference of independent photons," Phys. Rev. Lett. 96, 240502 (2006).
[CrossRef] [PubMed]

Claps, R.

de Riedmatten, H.

I. Marcikic, H. de Riedmatten, W. Tittel, H. Zbinden, N. Gisin, "Long-distance teleportation of qubits at telecommunication wavelengths," Nature 421, 509-513 (2003).
[CrossRef] [PubMed]

H. de Riedmatten, I. Marcikic, W. Tittel, H. Zbinden, and N. Gisin, "Quantum interference with photon pairs created in spatially separated sources," Phys. Rev. A 67, 022301 (2003).

Dimitropoulos, D.

Dowling, J. P.

P. Kok, W. J. Munro, K. Nemoto, T. C. Ralph, J. P. Dowling, and G. J. Milburn, "Linear optical quantum computing with photonic qubits," Rev. Mod. Phys. 79, 135-174 (2007).
[CrossRef]

Ekert, A. K.

A. K. Ekert, "Quantum cryptography based on Bell’s theorem," Phys. Rev. Lett. 67, 661-663 (1991).
[CrossRef] [PubMed]

Foster, M. A.

Fukuda, H.

H. Takesue, H. Fukuda, T. Tsuchizawa, T. Watanabe, K. Yamada, Y. Tokura, and S. Itabashi, "Generation of polarization entangled photon pairs using silicon wire waveguide," Opt. Express 16, 5721-5727 (2008).
[CrossRef] [PubMed]

H. Takesue, Y. Tokura, H. Fukuda, T. Tsuchizawa, T. Watanabe, K. Yamada, and S. Itabashi, "Entanglement generation using silicon wire waveguide," Appl. Phys. Lett. 91, 201108 (2007).
[CrossRef]

T. Tsuchizawa, K. Yamada, H. Fukuda, T. Watanabe, J. Takahashi, M. Takahashi, T. Shoji, E. Tamechika, S. Itabashi, and H. Morita, "Microphotonics devices based on silicon microfabrication technology," IEEE J. Sel. Top. Quantum Electron. 11, 232-240 (2005).
[CrossRef]

H. Fukuda, K. Yamada, T. Shoji, M. Takahashi, T. Tsuchizawa, T. Watanabe, J. Takahashi, and S. Itabashi, "Four-wave mixing in silicon wire waveguides," Opt. Express 13, 4629-4637 (2005).
[CrossRef] [PubMed]

Gaeta, A. L.

Gisin, N.

I. Marcikic, H. de Riedmatten, W. Tittel, H. Zbinden, N. Gisin, "Long-distance teleportation of qubits at telecommunication wavelengths," Nature 421, 509-513 (2003).
[CrossRef] [PubMed]

H. de Riedmatten, I. Marcikic, W. Tittel, H. Zbinden, and N. Gisin, "Quantum interference with photon pairs created in spatially separated sources," Phys. Rev. A 67, 022301 (2003).

Han, Y.

Honjo, T.

Inoue, K.

Itabashi, S.

H. Takesue, H. Fukuda, T. Tsuchizawa, T. Watanabe, K. Yamada, Y. Tokura, and S. Itabashi, "Generation of polarization entangled photon pairs using silicon wire waveguide," Opt. Express 16, 5721-5727 (2008).
[CrossRef] [PubMed]

H. Takesue, Y. Tokura, H. Fukuda, T. Tsuchizawa, T. Watanabe, K. Yamada, and S. Itabashi, "Entanglement generation using silicon wire waveguide," Appl. Phys. Lett. 91, 201108 (2007).
[CrossRef]

T. Tsuchizawa, K. Yamada, H. Fukuda, T. Watanabe, J. Takahashi, M. Takahashi, T. Shoji, E. Tamechika, S. Itabashi, and H. Morita, "Microphotonics devices based on silicon microfabrication technology," IEEE J. Sel. Top. Quantum Electron. 11, 232-240 (2005).
[CrossRef]

H. Fukuda, K. Yamada, T. Shoji, M. Takahashi, T. Tsuchizawa, T. Watanabe, J. Takahashi, and S. Itabashi, "Four-wave mixing in silicon wire waveguides," Opt. Express 13, 4629-4637 (2005).
[CrossRef] [PubMed]

Jalali, B.

Kaji, R.

A. Yoshizawa, R. Kaji, and H. Tsuchida, "Generation of polarization-entangled photon pairs at 1550 nm using two PPLN waveguides," Electron. Lett. 39, 621-622 (2003).
[CrossRef]

Kaltenbaek, R.

R. Kaltenbaek, B. Blauensteiner, M. Zukowski, M. Aspelmeyer, and A. Zeilinger, "Experimental interference of independent photons," Phys. Rev. Lett. 96, 240502 (2006).
[CrossRef] [PubMed]

Kardynal, B. E.

Z. L. Yuan, B. E. Kardynal, A. W. Sharpe, and A. J. Shields, "High speed single photon detection in the near infrared," Appl. Phys. Lett. 91, 041114 (2007).
[CrossRef]

Kok, P.

P. Kok, W. J. Munro, K. Nemoto, T. C. Ralph, J. P. Dowling, and G. J. Milburn, "Linear optical quantum computing with photonic qubits," Rev. Mod. Phys. 79, 135-174 (2007).
[CrossRef]

Kumar, P.

J. Sharping, K. F. Lee, M. A. Foster, A. C. Turner, B. S. Schmidt, M. Lipson, A. L. Gaeta, and P. Kumar, "Generation of correlated photons in nanoscale silicon waveguides," Opt. Express 14, 12388-12393 (2006).
[CrossRef] [PubMed]

X. Li, P. L. Voss, J. E. Sharping, and P. Kumar, "Optical-fiber source of polarization-entangled photons in the 1550 nm telecom band," Phys. Rev. Lett. 94, 053601 (2005).
[CrossRef] [PubMed]

Lee, K. F.

Li, X.

X. Li, P. L. Voss, J. E. Sharping, and P. Kumar, "Optical-fiber source of polarization-entangled photons in the 1550 nm telecom band," Phys. Rev. Lett. 94, 053601 (2005).
[CrossRef] [PubMed]

Lipson, M.

Marcikic, I.

I. Marcikic, H. de Riedmatten, W. Tittel, H. Zbinden, N. Gisin, "Long-distance teleportation of qubits at telecommunication wavelengths," Nature 421, 509-513 (2003).
[CrossRef] [PubMed]

H. de Riedmatten, I. Marcikic, W. Tittel, H. Zbinden, and N. Gisin, "Quantum interference with photon pairs created in spatially separated sources," Phys. Rev. A 67, 022301 (2003).

Milburn, G. J.

P. Kok, W. J. Munro, K. Nemoto, T. C. Ralph, J. P. Dowling, and G. J. Milburn, "Linear optical quantum computing with photonic qubits," Rev. Mod. Phys. 79, 135-174 (2007).
[CrossRef]

Morita, H.

T. Tsuchizawa, K. Yamada, H. Fukuda, T. Watanabe, J. Takahashi, M. Takahashi, T. Shoji, E. Tamechika, S. Itabashi, and H. Morita, "Microphotonics devices based on silicon microfabrication technology," IEEE J. Sel. Top. Quantum Electron. 11, 232-240 (2005).
[CrossRef]

T. Shoji, T. Tsuchizawa, T. Watanabe, K. Yamada, and H. Morita, "Low loss mode size converter from 0.3 μm square Si wire waveguides to singlemode fibres," Electron. Lett. 38, 1669-1670 (2002).
[CrossRef]

Munro, W. J.

P. Kok, W. J. Munro, K. Nemoto, T. C. Ralph, J. P. Dowling, and G. J. Milburn, "Linear optical quantum computing with photonic qubits," Rev. Mod. Phys. 79, 135-174 (2007).
[CrossRef]

Nemoto, K.

P. Kok, W. J. Munro, K. Nemoto, T. C. Ralph, J. P. Dowling, and G. J. Milburn, "Linear optical quantum computing with photonic qubits," Rev. Mod. Phys. 79, 135-174 (2007).
[CrossRef]

Nishida, Y.

Ralph, T. C.

P. Kok, W. J. Munro, K. Nemoto, T. C. Ralph, J. P. Dowling, and G. J. Milburn, "Linear optical quantum computing with photonic qubits," Rev. Mod. Phys. 79, 135-174 (2007).
[CrossRef]

Schmidt, B. S.

Sharpe, A. W.

Z. L. Yuan, B. E. Kardynal, A. W. Sharpe, and A. J. Shields, "High speed single photon detection in the near infrared," Appl. Phys. Lett. 91, 041114 (2007).
[CrossRef]

Sharping, J.

Sharping, J. E.

X. Li, P. L. Voss, J. E. Sharping, and P. Kumar, "Optical-fiber source of polarization-entangled photons in the 1550 nm telecom band," Phys. Rev. Lett. 94, 053601 (2005).
[CrossRef] [PubMed]

Shields, A. J.

Z. L. Yuan, B. E. Kardynal, A. W. Sharpe, and A. J. Shields, "High speed single photon detection in the near infrared," Appl. Phys. Lett. 91, 041114 (2007).
[CrossRef]

Shoji, T.

H. Fukuda, K. Yamada, T. Shoji, M. Takahashi, T. Tsuchizawa, T. Watanabe, J. Takahashi, and S. Itabashi, "Four-wave mixing in silicon wire waveguides," Opt. Express 13, 4629-4637 (2005).
[CrossRef] [PubMed]

T. Tsuchizawa, K. Yamada, H. Fukuda, T. Watanabe, J. Takahashi, M. Takahashi, T. Shoji, E. Tamechika, S. Itabashi, and H. Morita, "Microphotonics devices based on silicon microfabrication technology," IEEE J. Sel. Top. Quantum Electron. 11, 232-240 (2005).
[CrossRef]

T. Shoji, T. Tsuchizawa, T. Watanabe, K. Yamada, and H. Morita, "Low loss mode size converter from 0.3 μm square Si wire waveguides to singlemode fibres," Electron. Lett. 38, 1669-1670 (2002).
[CrossRef]

Tadanaga, O.

Takahashi, H.

Takahashi, J.

H. Fukuda, K. Yamada, T. Shoji, M. Takahashi, T. Tsuchizawa, T. Watanabe, J. Takahashi, and S. Itabashi, "Four-wave mixing in silicon wire waveguides," Opt. Express 13, 4629-4637 (2005).
[CrossRef] [PubMed]

T. Tsuchizawa, K. Yamada, H. Fukuda, T. Watanabe, J. Takahashi, M. Takahashi, T. Shoji, E. Tamechika, S. Itabashi, and H. Morita, "Microphotonics devices based on silicon microfabrication technology," IEEE J. Sel. Top. Quantum Electron. 11, 232-240 (2005).
[CrossRef]

Takahashi, M.

T. Tsuchizawa, K. Yamada, H. Fukuda, T. Watanabe, J. Takahashi, M. Takahashi, T. Shoji, E. Tamechika, S. Itabashi, and H. Morita, "Microphotonics devices based on silicon microfabrication technology," IEEE J. Sel. Top. Quantum Electron. 11, 232-240 (2005).
[CrossRef]

H. Fukuda, K. Yamada, T. Shoji, M. Takahashi, T. Tsuchizawa, T. Watanabe, J. Takahashi, and S. Itabashi, "Four-wave mixing in silicon wire waveguides," Opt. Express 13, 4629-4637 (2005).
[CrossRef] [PubMed]

Takesue, H.

Tamechika, E.

T. Tsuchizawa, K. Yamada, H. Fukuda, T. Watanabe, J. Takahashi, M. Takahashi, T. Shoji, E. Tamechika, S. Itabashi, and H. Morita, "Microphotonics devices based on silicon microfabrication technology," IEEE J. Sel. Top. Quantum Electron. 11, 232-240 (2005).
[CrossRef]

Tittel, W.

H. de Riedmatten, I. Marcikic, W. Tittel, H. Zbinden, and N. Gisin, "Quantum interference with photon pairs created in spatially separated sources," Phys. Rev. A 67, 022301 (2003).

I. Marcikic, H. de Riedmatten, W. Tittel, H. Zbinden, N. Gisin, "Long-distance teleportation of qubits at telecommunication wavelengths," Nature 421, 509-513 (2003).
[CrossRef] [PubMed]

Tokura, Y.

H. Takesue, H. Fukuda, T. Tsuchizawa, T. Watanabe, K. Yamada, Y. Tokura, and S. Itabashi, "Generation of polarization entangled photon pairs using silicon wire waveguide," Opt. Express 16, 5721-5727 (2008).
[CrossRef] [PubMed]

H. Takesue, Y. Tokura, H. Fukuda, T. Tsuchizawa, T. Watanabe, K. Yamada, and S. Itabashi, "Entanglement generation using silicon wire waveguide," Appl. Phys. Lett. 91, 201108 (2007).
[CrossRef]

Tsuchida, H.

A. Yoshizawa, R. Kaji, and H. Tsuchida, "Generation of polarization-entangled photon pairs at 1550 nm using two PPLN waveguides," Electron. Lett. 39, 621-622 (2003).
[CrossRef]

Tsuchizawa, T.

H. Takesue, H. Fukuda, T. Tsuchizawa, T. Watanabe, K. Yamada, Y. Tokura, and S. Itabashi, "Generation of polarization entangled photon pairs using silicon wire waveguide," Opt. Express 16, 5721-5727 (2008).
[CrossRef] [PubMed]

H. Takesue, Y. Tokura, H. Fukuda, T. Tsuchizawa, T. Watanabe, K. Yamada, and S. Itabashi, "Entanglement generation using silicon wire waveguide," Appl. Phys. Lett. 91, 201108 (2007).
[CrossRef]

T. Tsuchizawa, K. Yamada, H. Fukuda, T. Watanabe, J. Takahashi, M. Takahashi, T. Shoji, E. Tamechika, S. Itabashi, and H. Morita, "Microphotonics devices based on silicon microfabrication technology," IEEE J. Sel. Top. Quantum Electron. 11, 232-240 (2005).
[CrossRef]

H. Fukuda, K. Yamada, T. Shoji, M. Takahashi, T. Tsuchizawa, T. Watanabe, J. Takahashi, and S. Itabashi, "Four-wave mixing in silicon wire waveguides," Opt. Express 13, 4629-4637 (2005).
[CrossRef] [PubMed]

T. Shoji, T. Tsuchizawa, T. Watanabe, K. Yamada, and H. Morita, "Low loss mode size converter from 0.3 μm square Si wire waveguides to singlemode fibres," Electron. Lett. 38, 1669-1670 (2002).
[CrossRef]

Turner, A. C.

Voss, P. L.

X. Li, P. L. Voss, J. E. Sharping, and P. Kumar, "Optical-fiber source of polarization-entangled photons in the 1550 nm telecom band," Phys. Rev. Lett. 94, 053601 (2005).
[CrossRef] [PubMed]

Waks, E.

E. Waks, A. Zeevi, and Y. Yamamoto, "Security of quantum key distribution with entangled photons against individual attacks," Phys. Rev. A 65, 052310 (2002).
[CrossRef]

Watanabe, T.

H. Takesue, H. Fukuda, T. Tsuchizawa, T. Watanabe, K. Yamada, Y. Tokura, and S. Itabashi, "Generation of polarization entangled photon pairs using silicon wire waveguide," Opt. Express 16, 5721-5727 (2008).
[CrossRef] [PubMed]

H. Takesue, Y. Tokura, H. Fukuda, T. Tsuchizawa, T. Watanabe, K. Yamada, and S. Itabashi, "Entanglement generation using silicon wire waveguide," Appl. Phys. Lett. 91, 201108 (2007).
[CrossRef]

T. Tsuchizawa, K. Yamada, H. Fukuda, T. Watanabe, J. Takahashi, M. Takahashi, T. Shoji, E. Tamechika, S. Itabashi, and H. Morita, "Microphotonics devices based on silicon microfabrication technology," IEEE J. Sel. Top. Quantum Electron. 11, 232-240 (2005).
[CrossRef]

H. Fukuda, K. Yamada, T. Shoji, M. Takahashi, T. Tsuchizawa, T. Watanabe, J. Takahashi, and S. Itabashi, "Four-wave mixing in silicon wire waveguides," Opt. Express 13, 4629-4637 (2005).
[CrossRef] [PubMed]

T. Shoji, T. Tsuchizawa, T. Watanabe, K. Yamada, and H. Morita, "Low loss mode size converter from 0.3 μm square Si wire waveguides to singlemode fibres," Electron. Lett. 38, 1669-1670 (2002).
[CrossRef]

Yamada, K.

H. Takesue, H. Fukuda, T. Tsuchizawa, T. Watanabe, K. Yamada, Y. Tokura, and S. Itabashi, "Generation of polarization entangled photon pairs using silicon wire waveguide," Opt. Express 16, 5721-5727 (2008).
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H. Takesue, Y. Tokura, H. Fukuda, T. Tsuchizawa, T. Watanabe, K. Yamada, and S. Itabashi, "Entanglement generation using silicon wire waveguide," Appl. Phys. Lett. 91, 201108 (2007).
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T. Tsuchizawa, K. Yamada, H. Fukuda, T. Watanabe, J. Takahashi, M. Takahashi, T. Shoji, E. Tamechika, S. Itabashi, and H. Morita, "Microphotonics devices based on silicon microfabrication technology," IEEE J. Sel. Top. Quantum Electron. 11, 232-240 (2005).
[CrossRef]

H. Fukuda, K. Yamada, T. Shoji, M. Takahashi, T. Tsuchizawa, T. Watanabe, J. Takahashi, and S. Itabashi, "Four-wave mixing in silicon wire waveguides," Opt. Express 13, 4629-4637 (2005).
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T. Shoji, T. Tsuchizawa, T. Watanabe, K. Yamada, and H. Morita, "Low loss mode size converter from 0.3 μm square Si wire waveguides to singlemode fibres," Electron. Lett. 38, 1669-1670 (2002).
[CrossRef]

Yamamoto, Y.

E. Waks, A. Zeevi, and Y. Yamamoto, "Security of quantum key distribution with entangled photons against individual attacks," Phys. Rev. A 65, 052310 (2002).
[CrossRef]

Yoshizawa, A.

A. Yoshizawa, R. Kaji, and H. Tsuchida, "Generation of polarization-entangled photon pairs at 1550 nm using two PPLN waveguides," Electron. Lett. 39, 621-622 (2003).
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Yuan, Z. L.

Z. L. Yuan, B. E. Kardynal, A. W. Sharpe, and A. J. Shields, "High speed single photon detection in the near infrared," Appl. Phys. Lett. 91, 041114 (2007).
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Zbinden, H.

I. Marcikic, H. de Riedmatten, W. Tittel, H. Zbinden, N. Gisin, "Long-distance teleportation of qubits at telecommunication wavelengths," Nature 421, 509-513 (2003).
[CrossRef] [PubMed]

H. de Riedmatten, I. Marcikic, W. Tittel, H. Zbinden, and N. Gisin, "Quantum interference with photon pairs created in spatially separated sources," Phys. Rev. A 67, 022301 (2003).

Zeevi, A.

E. Waks, A. Zeevi, and Y. Yamamoto, "Security of quantum key distribution with entangled photons against individual attacks," Phys. Rev. A 65, 052310 (2002).
[CrossRef]

Zeilinger, A.

R. Kaltenbaek, B. Blauensteiner, M. Zukowski, M. Aspelmeyer, and A. Zeilinger, "Experimental interference of independent photons," Phys. Rev. Lett. 96, 240502 (2006).
[CrossRef] [PubMed]

Zukowski, M.

R. Kaltenbaek, B. Blauensteiner, M. Zukowski, M. Aspelmeyer, and A. Zeilinger, "Experimental interference of independent photons," Phys. Rev. Lett. 96, 240502 (2006).
[CrossRef] [PubMed]

Appl. Phys. Lett.

H. Takesue, Y. Tokura, H. Fukuda, T. Tsuchizawa, T. Watanabe, K. Yamada, and S. Itabashi, "Entanglement generation using silicon wire waveguide," Appl. Phys. Lett. 91, 201108 (2007).
[CrossRef]

Z. L. Yuan, B. E. Kardynal, A. W. Sharpe, and A. J. Shields, "High speed single photon detection in the near infrared," Appl. Phys. Lett. 91, 041114 (2007).
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Electron. Lett.

T. Shoji, T. Tsuchizawa, T. Watanabe, K. Yamada, and H. Morita, "Low loss mode size converter from 0.3 μm square Si wire waveguides to singlemode fibres," Electron. Lett. 38, 1669-1670 (2002).
[CrossRef]

A. Yoshizawa, R. Kaji, and H. Tsuchida, "Generation of polarization-entangled photon pairs at 1550 nm using two PPLN waveguides," Electron. Lett. 39, 621-622 (2003).
[CrossRef]

IEEE J. Sel. Top. Quantum Electron.

T. Tsuchizawa, K. Yamada, H. Fukuda, T. Watanabe, J. Takahashi, M. Takahashi, T. Shoji, E. Tamechika, S. Itabashi, and H. Morita, "Microphotonics devices based on silicon microfabrication technology," IEEE J. Sel. Top. Quantum Electron. 11, 232-240 (2005).
[CrossRef]

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I. Marcikic, H. de Riedmatten, W. Tittel, H. Zbinden, N. Gisin, "Long-distance teleportation of qubits at telecommunication wavelengths," Nature 421, 509-513 (2003).
[CrossRef] [PubMed]

Opt. Express

Opt. Lett.

Phys. Rev. A

H. de Riedmatten, I. Marcikic, W. Tittel, H. Zbinden, and N. Gisin, "Quantum interference with photon pairs created in spatially separated sources," Phys. Rev. A 67, 022301 (2003).

E. Waks, A. Zeevi, and Y. Yamamoto, "Security of quantum key distribution with entangled photons against individual attacks," Phys. Rev. A 65, 052310 (2002).
[CrossRef]

Phys. Rev. Lett.

R. Kaltenbaek, B. Blauensteiner, M. Zukowski, M. Aspelmeyer, and A. Zeilinger, "Experimental interference of independent photons," Phys. Rev. Lett. 96, 240502 (2006).
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X. Li, P. L. Voss, J. E. Sharping, and P. Kumar, "Optical-fiber source of polarization-entangled photons in the 1550 nm telecom band," Phys. Rev. Lett. 94, 053601 (2005).
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P. Kok, W. J. Munro, K. Nemoto, T. C. Ralph, J. P. Dowling, and G. J. Milburn, "Linear optical quantum computing with photonic qubits," Rev. Mod. Phys. 79, 135-174 (2007).
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Other

H. Takesue and K. Inoue, "Generation of polarization-entangled photon pairs and violation of Bell’s inequality using spontaneous four-wave mixing in a fiber loop," Phys. Rev. A 70, 031802(R) (2004).
[CrossRef]

H. Takesue and K. Inoue, "Generation of 1.5-μm band time-bin entanglement using spontaneous fiber four-wave mixing and planar light-wave circuit interferometers," Phys. Rev. A 72, 041804(R) (2005).
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Figures (3)

Fig. 1.
Fig. 1.

Experimental setup. PG : pulse generator, PC : polarization controller, SPD1, SPD2 : single photon detectors for signal and idler photons.

Fig. 2.
Fig. 2.

Plot of the coincidence to accidental coincidence ratio (CAR) as a function of the number of idler photons per pulse using an SWW (a) and cooled DSF (b). The inset in Fig. 2 (b) is a plot of the CAR using DSF at room temperature.

Fig. 3.
Fig. 3.

Coincidence count per signal count as a function of the temperature of the PLC interferometer for the idler. The solid line (circles) and dotted line (squares) are two-photon interference fringes at 20.68° and 20.88°, respectively.

Equations (5)

Equations on this page are rendered with MathJax. Learn more.

H ̂ = i h ˉ χ { a ̂ s a ̂ i a ̂ s a ̂ i } ,
Ψ ( t ) = e i H ̂ h ˉ t 0 , 0 .
Ψ ( t ) = 1 cosh χ t 0 , 0 + tanh χ t cosh χ t 1 , 1 + ( tanh χ t ) 2 cosh χ t 2 , 2 + .
Ψ ( t ) = 0 , 0 + χ t 1 , 1 .
Φ = ( 1 s 1 i + e 2 i ϕ 2 s 2 i ) 2 .

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