Polarization entanglement and quantum beats of photon pairs from four-wave mixing in a cold 87Rb ensemble

被引：20

作者：

Gulati, Gurpreet Kaur ^{[1
]}

Srivathsan, Bharath ^{[1
]}

Chng, Brenda ^{[1
]}

Cere, Alessandro ^{[1
]}

Kurtsiefer, Christian ^{[1
,2
]}

机构：

[1] Natl Univ Singapore, Ctr Quantum Technol, Singapore 117543, Singapore

[2] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore

来源：

NEW JOURNAL OF PHYSICS | 2015年 / 17卷

基金：

新加坡国家研究基金会;

关键词：

entangled photon pairs; quantum beats; four-wave mixing; GENERATION;

D O I：

10.1088/1367-2630/17/9/093034

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We characterize correlations in polarization and time of photon pairs generated from a cold cloud of Rb-87 atoms via a four-wave mixing process in a cascade level scheme. Quantum state tomography reveals entangled polarization states of high purity for each of the decay paths through two different intermediate hyperfine levels. When allowing both decay paths, we observe quantum beats in time-resolved correlation measurements.

引用

页数：6

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