Fiber-optic sources of quantum entanglement

被引：0
|
作者：
Kumar, P [1 ]
Li, XY [1 ]
Fiorentino, M [1 ]
Voss, PL [1 ]
Sharping, JE [1 ]
Barbosa, GA [1 ]
机构：
[1] Northwestern Univ, ECE Dept, Ctr Photon Commun & Comp, Evanston, IL 60208 USA
来源：
QUANTUM COMMUNICATION, MEASUREMENT AND COMPUTING, PROCEEDINGS | 2003年
关键词：
D O I：
暂无
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
We present a fiber-based source of polarization-entangled photon pairs that is well suited for quantum communication applications in the 1.5 mum band of standard teleco cation fiber. Quantum-correlated signal and idler photon pairs are produced when a nonlinear-fiber Sagnac interferometer is pumped in the anomalous-dispersion region of the fiber. Recently, we have demonstrated nonclassical properties of such photon pairs by using Geiger-mode InGaAs/InP avalanche photodiodes. Polarization entanglement in the photon pairs can be created by pumping the Signac interferometer with two orthogonally-polarized pulses. In this case the parametrically scattered signal-idler photons yield biphoton interference with > 90% visibility in coincidence detection, while no interference is observed in direct detection of either the signal or the idler photons.
引用
收藏
页码：522 / 527
页数：6
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