Photon-Photon Entanglement with a Single Trapped Atom

被引：99
|
作者：
Weber, B. [1 ]
Specht, H. P. [1 ]
Mueller, T. [1 ]
Bochmann, J. [1 ]
Muecke, M. [1 ]
Moehring, D. L. [1 ]
Rempe, G. [1 ]
机构：
[1] Max Planck Inst Quantum Opt, D-85748 Garching, Germany
来源：
PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 03期
关键词：
QUANTUM; STATE; CAVITY;
D O I：
10.1103/PhysRevLett.102.030501
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
An experiment is performed where a single rubidium atom trapped within a high-finesse optical cavity emits two independently triggered entangled photons. The entanglement is mediated by the atom and is characterized both by a Bell inequality violation of S=2.5, as well as full quantum-state tomography, resulting in a fidelity exceeding F=90%. The combination of cavity-QED and trapped atom techniques makes our protocol inherently deterministic-an essential step for the generation of scalable entanglement between the nodes of a distributed quantum network.
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页数：4
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