Quantum communications with compressed decoherence using bright squeezed light

被引:4
|
作者
Hong, Fang-Yu [1 ]
Xiong, Shi-Jie
机构
[1] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210008, Peoples R China
基金
中国国家自然科学基金;
关键词
squeezed state; quantum communication; homodyne detection;
D O I
10.1080/09500340802220737
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We propose a scheme for long-distance distribution of quantum entanglement in which the entanglement between qubits at intermediate stations of the channel is established by using bright light pulses in squeezed states coupled to the qubits in cavities with a weak dispersive interaction. The fidelity of the entanglement between qubits at the neighbor stations (10 km apart from each other) obtained by postselection through the balanced homodyne detection of 7 dB squeezed pulses can reach F=0.99 without using entanglement purification, at the same time, the probability of successful generation of entanglement is 0.34.
引用
收藏
页码:2731 / 2737
页数:7
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