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Proceedings Paper

Telecom-band entanglement swapping using high-speed single-photon detectors based on sinusoidally-gated InGaAs/InP avalanche photodiodes
Author(s): Hiroki Takesue
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Paper 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.

Paper Details

Date Published: 29 April 2009
PDF: 13 pages
Proc. SPIE 7320, Advanced Photon Counting Techniques III, 73200U (29 April 2009); doi: 10.1117/12.820842
Show Author Affiliations
Hiroki Takesue, NTT Basic Research Labs. (Japan)
CREST, Japan Science and Technology Agency (Japan)

Published in SPIE Proceedings Vol. 7320:
Advanced Photon Counting Techniques III
Mark A. Itzler; Joe C. Campbell, Editor(s)

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