Telecom-band entanglement swapping using high-speed single-photon detectors based on sinusoidally-gated InGaAs/InP avalanche photodiodes

Hiroki Takesue

doi:10.1117/12.820842

29 April 2009 Telecom-band entanglement swapping using high-speed single-photon detectors based on sinusoidally-gated InGaAs/InP avalanche photodiodes

Hiroki Takesue

Author Affiliations +

Proceedings Volume 7320, Advanced Photon Counting Techniques III; 73200U (2009) https://doi.org/10.1117/12.820842
Event: SPIE Defense, Security, and Sensing, 2009, Orlando, Florida, United States

Abstract

We report the first entanglement swapping experiment using entangled photon-pair sources based on spontaneous four-wave mixing (SFWM). The 1.5-μm band entangled photon pairs generated by SFWM in two independent 500-m dispersion shifted fibers exhibited quantum interference, thanks to the negligible walk-off between the pump and photon pairs. The use of 500-MHz gated-mode InGaAs/InP avalanche photodiodes based on the sine-wave gating technique increased the fourfold coincidence rate significantly. As a result, the formation of an entanglement between photons from independent sources was successfully observed.

Citation Download Citation

Hiroki Takesue "Telecom-band entanglement swapping using high-speed single-photon detectors based on sinusoidally-gated InGaAs/InP avalanche photodiodes", Proc. SPIE 7320, Advanced Photon Counting Techniques III, 73200U (29 April 2009); https://doi.org/10.1117/12.820842

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