1550纳米处偏振纠缠光子对的Hong-Ou-Mandel干涉测量

Hong-Ou-Mandel dip measurements of polarization-entangled photon pairs at 1550 nm.

作者信息

Xue Yinghong, Yoshizawa Akio, Tsuchida Hidemi

机构信息

Photonics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST),1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan.

出版信息

Opt Express. 2010 Apr 12;18(8):8182-6. doi: 10.1364/OE.18.008182.

DOI:10.1364/OE.18.008182

PMID:20588663

Abstract

We performed a quantum interference experiment using two polarization-entangled photon pairs at 1550 nm, created in periodically poled lithium niobate waveguides. Using four-fold coincidences, a Hong-Ou-Mandel dip at diagonal polarization was observed with a visibility of 74.5% before subtracting accidental coincidences. This experiment lays a foundation for demonstrating polarization-based entanglement swapping and for realizing a quantum relay.

摘要

我们利用周期性极化铌酸锂波导中产生的两对1550纳米的偏振纠缠光子对进行了量子干涉实验。通过四重符合测量，在扣除偶然符合事件之前，观察到对角偏振下的Hong-Ou-Mandel凹陷，可见度为74.5%。该实验为基于偏振的纠缠交换演示和量子中继的实现奠定了基础。