Information-holding quantum router of single photons using natural atom
Information-holding quantum router of single photons using natural atom
复制标题
使用自然原子的单光子信息保存量子路由器
DOI:
10.1140/epjd/e2016-60724-6
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发表时间:
2016-04
影响因子:
1.8
通讯作者:
Chen Ai-Xi
中科院分区:
文献类型:
--
作者:
Yan Guo-An;Cai Qing-Yu;Chen Ai-Xi
AbstractIn a quantum network, a quantum router can play a key role that involves exchanging quantum information (quantum states) among different parties. In this paper, we propose a single-photon quantum router by using a four-level atom that is embedded in quantum multi-channels, which are composed of coupled-resonator waveguides. Single photons can be guided from one quantum channel to another by controlling an on-demand classical field. The fidelity of the routing atom recovers to a maximum after a time evolution cycle of the system; thus, the fidelity of the information-carrying single photon reaches unit at the same time. For the first time, we demonstrate that quantum information carried by single photons can be perfectly held after a quantum router.Graphical abstract
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