Generation of three-mode light entanglement via double-channel resonant four-wave mixing

Generation of three-mode light entanglement via double-channel resonant four-wave mixing
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双通道谐振四波混频产生三模光纠缠

DOI:
10.1016/j.optcom.2011.04.010
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发表时间:
2011-08
影响因子:
2.4
通讯作者:
Zhong, Wen-xue
Zhong, Wen-xue
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Cheng, Guang-ling;Chen, Ai-xi;Zhong, Wen-xue

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我们提出了一种利用嵌入在三模腔中的Na5能级双Λ−原子系综在稳态下产生三体连续变量纠缠的方案。该方案基于双通道共振四波混频,使得上层双Λ系统的双场之和模与低V系统的模之间存在参数相互作用。正因为如此,三个腔模是相互关联和纠缠的。本计划具有以下两个显著特点。一种是在全共振条件下实现了稳态三体纠缠。另一个特点是,所有的场分别耦合到不同的原子跃迁。特别是,三体纠缠发生在频差较大的场之间,这可能是量子信息进展所必需的。
We present a scheme to generate tripartite continuous-variable entanglement at the steady state by using an ensemble ofNafive-level double-Λ−Vatoms embedded in a three-mode cavity. The scheme is based on the two-channel resonant four-wave mixing, which leads to the parametric interaction between the sum mode of two fields from the upper double-Λsystem and the mode from the lowerVsystem. It is for such reason that three cavity modes are correlated and entangled. The present scheme has the following two striking features. One is that the steady-state tripartite entanglement is achieved under the full-resonance condition. Another feature is the fact that all the fields are coupled to the different atomic transitions, respectively. In particular, the tripartite entanglement occurs among the fields with the large frequency differences, which may be necessary for the progress of quantum information.
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发表时间: 1985-09
期刊: Physical review. A, General physics
影响因子: --
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