光纤中产生的单光子态与热态之间的量子干涉观测。

Observation of quantum interference between a single-photon state and a thermal state generated in optical fibers.

作者信息

Li Xiaoying, Yang Lei, Cui Liang, Ou Zhe Yu, Yu Daoyin

机构信息

College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Key Laboratory of Optoelectronics Information Science and Technology, Ministry of Education, Tianjin 300072, PR China.

出版信息

Opt Express. 2008 Aug 18;16(17):12505-10. doi: 10.1364/oe.16.012505.

DOI:10.1364/oe.16.012505

PMID:18711486

Abstract

We experimentally demonstrate a Hong-Ou-Mandel type of two-photon interference effect with a heralded single-photon state and a thermal state. The light sources in the 1550 nm telecom band are generated from two independent dispersion-shifted fibers via four-wave mixing process. The observed visibility is (82+/- 11)%. This type of interference between independent sources is crucial in quantum information process with independent qubits.

摘要

我们通过一个预示单光子态和一个热态，实验证明了Hong-Ou-Mandel型双光子干涉效应。1550纳米电信波段的光源是通过四波混频过程从两根独立的色散位移光纤中产生的。观察到的可见度为(82±11)%。这种独立光源之间的干涉类型在具有独立量子比特的量子信息处理中至关重要。