Virtual-photon-induced quantum phase gates for two distant atoms trapped in separate cavities

Virtual-photon-induced quantum phase gates for two distant atoms trapped in separate cavities
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虚拟光子诱导的量子相门,用于捕获在不同空腔中的两个遥远原子

DOI:
10.1063/1.3117235
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发表时间:
2009-04
影响因子:
4
通讯作者:
郑仕标
郑仕标
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
郑仕标

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我们提出了一种方案来实现量子门两个原子被困在由光纤连接的远腔。在没有光子通过光纤的激发和输运的情况下,实现了两个分布式量子比特之间的有效远距离耦合。由于腔模式和光纤模式从未被填充,原子也没有发生跃迁,所以当环境中的热光子可以忽略不计时,栅极操作对退相干效应不敏感。该方案为网络量子信息处理器和实现分布式和可扩展的量子计算开辟了有希望的前景。
We propose a scheme for implementing quantum gates for two atoms trapped in distant cavities connected by an optical fiber. The effective long-distance coupling between the two distributed qubits is achieved without excitation and transportation of photons through the optical fiber. Since the cavity modes and fiber mode are never populated and the atoms undergo no transitions, the gate operation is insensitive to the decoherence effect when the thermal photons in the environment are negligible. The scheme opens promising perspectives for networking quantum information processors and implementing distributed and scalable quantum computation.
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