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arXiv 1405.0937quant-phphysics.atom-phphysics.optics
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单光子控制单原子开关实现单光子的全光路由

All-Optical Routing of Single Photons by a One-Atom Switch Controlled by a Single Photon

Itay Shomroni, Serge Rosenblum, Yulia Lovsky, Orel Bechler, Gabriel Guendelman, Barak Dayan

摘要:

量子网络的前景,即量子信息由光子电路中的单光子携带,长期以来一直是实现单光子全光路由的努力背后的驱动力。在这里,我们实现了这种光子电路的最基本单元:单光子激活开关,能够将光子从其两个输入中的任何一个路由到其两个输出中的任何一个。我们的设备是基于一个单一的87 Rb原子耦合到光纤耦合,基于芯片的微谐振器,是完全全光的,不需要其他领域以外的光纤单光子脉冲。控制脉冲的非经典统计数据证实,单个反射光子将开关从高反射(65%)切换到高透射(90%),每个开关事件平均约1.5个控制光子(约3个,包括线性损耗)。控制光子和目标光子都在光纤中并且实际上相同的事实使得该方案与用于量子信息处理的可扩展架构兼容。

英文摘要:

The prospect of quantum networks, in which quantum information is carried by single photons in photonic circuits, has long been the driving force behind the effort to achieve all-optical routing of single photons. Here we realize the most basic unit of such a photonic circuit: a single-photon activated switch, capable of routing a photon from any of its two inputs to any of its two outputs. Our device is based on a single 87Rb atom coupled to a fiber-coupled, chip-based microresonator, and is completely all-optical, requiring no other fields beside the in-fiber single-photon pulses. Nonclassical statistics of the control pulse confirm that a single reflected photon toggles the switch from high reflection (65%) to high transmission (90%), with average of ~1.5 control photons per switching event (~3 including linear losses). The fact that the control and target photons are both in-fiber and practically identical makes this scheme compatible with scalable architectures for quantum information processing.

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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