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arXiv 1708.06110quant-phcond-mat.mes-hallphysics.optics
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基于多个半无限耦合腔波导的非互易单光子频率转换器

Nonreciprocal single-photon frequency converter via multiple semi-infinite coupled-resonator waveguides

Xun-Wei Xu, Ai-Xi Chen, Yong Li, Yu-xi Liu

摘要:

我们提出利用多个半无限耦合谐振腔波导(CRW)构造非互易单光子频率转换器。我们首先证明了一个单光子的频率可以通过两个CRW,这是间接耦合的两个非简并力学模式的光机械相互作用的非相干转换。基于这种非互易性,提出了两种不同的单光子环行器在T形波导中的三个半无限CRW,这是成对耦合的光机相互作用。一个环形器是由两个非简并的机械模式,提出了另一个是由三个非简并的机械模式。通过打破时间反演对称性,诱导了非互易单光子频率转换,得到了非互易频率转换的最佳条件。这些建议可以用来实现非互易频率转换的单光子在任何两个不同的波导具有不同的频率,他们可以允许动态控制的频率转换的方向,通过调整外部驱动激光器的相位,这可能有多方面的应用在混合量子网络。

英文摘要:

We propose to construct a nonreciprocal single-photon frequency converter via multiple semi-infinite coupled-resonator waveguides (CRWs). We first demonstrate that the frequency of a single photon can be converted nonreciprocally through two CRWs, which are coupled indirectly by optomechanical interactions with two nondegenerate mechanical modes. Based on such nonreciprocity, two different single-photon circulators are proposed in the T-shaped waveguides consisting of three semi-infinite CRWs, which are coupled in pairwise by optomechanical interactions. One circulator is proposed by using two nondegenerate mechanical modes and the other one is proposed by using three nondegenerate mechanical modes. Nonreciprocal single-photon frequency conversion is induced by breaking the time-reversal symmetry, and the optimal conditions for nonreciprocal frequency conversion are obtained. These proposals can be used to realize nonreciprocal frequency conversion of single photons in any two distinctive waveguides with different frequencies and they can allow for dynamic control of the direction of frequency conversion by tuning the phases of external driving lasers, which may have versatile applications in hybrid quantum networks.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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