Universal quantum computation in decoherence-free subspace with neutral atoms.
Universal quantum computation in decoherence-free subspace with neutral atoms.
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DOI：
10.1103/physrevlett.97.140501
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发表时间：
2006-07
影响因子：
8.6
通讯作者：
P. Xue;Yun-Feng Xiao
中科院分区：
文献类型：
--
作者：
P. Xue;Yun-Feng Xiao
我们展示了中性原子和相干光脉冲之间的现实腔辅助相互作用，以及测量技术，结合原子的光输运，允许一组通用的量子门以确定性的方式作用于退相干自由子空间。逻辑量子比特对主要的退相干-去相源免疫，同时通过数值模拟显示了附加误差的影响。我们分析了所有所需操作的性能和稳定性，并强调所有技术在目前的实验技术下都是可行的。
We show how realistic cavity-assisted interaction between neutral atoms and coherent optical pulses, and measurement techniques, combined with optical transportation of atoms, allow for a universal set of quantum gates acting on decoherence--free subspace in a deterministic way. The logical qubits are immunized to the dominant source of decoherece-dephasing, while the influences of additional errors are shown by numerical simulations. We analyze the performance and stability of all required operations and emphasize that all techniques are feasible with current experimental technology.