通过从双光子对中进行光子减法产生的三光子N00N态。

Three-photon N00N states generated by photon subtraction from double photon pairs.

作者信息

Kim Heonoh, Park Hee Su, Choi Sang-Kyung

机构信息

Division of Convergence Technology, Korea Research Institute of Standards and Science 1 Doryong-dong, Yuseong-gu, Daejeon 305-340, Republic of Korea.

出版信息

Opt Express. 2009 Oct 26;17(22):19720-6. doi: 10.1364/OE.17.019720.

DOI:10.1364/OE.17.019720

PMID:19997192

Abstract

We describe an experimental demonstration of a novel three-photon N00N state generation scheme using a single source of photons based on spontaneous parametric down-conversion (SPDC). The three-photon entangled state is generated when a photon is subtracted from a double pair of photons and detected by a heralding counter. Interference fringes measured with an emulated three-photon detector reveal the three-photon de Broglie wavelength and exhibit visibility > 70% without background subtraction.

摘要

我们描述了一种基于自发参量下转换（SPDC）的单光子源产生新型三光子N00N态的实验演示。当从一对双光子中减去一个光子并由一个预示计数器进行检测时，就会产生三光子纠缠态。用模拟三光子探测器测量的干涉条纹揭示了三光子德布罗意波长，并且在不进行背景扣除的情况下，可见度大于70%。