中文题目: 克服腔QED中比特反转错误的无退相干子空间量子计算
外文题目: Quantum computation in decoherence-free subspaces for overcoming bit-flip error in cavity QED
作者: 陈月月; 刘呈普; 冯勋立
刊名: 量子电子学报
年: 2016 卷: 33 期: 5 页： 553--560
中文关键词:
量子光学; 通用量子计算; 无退相干子空间; 比特反转错误
英文关键词:

quantum optics; universal quantum computation; decoherence-free subspace; bit-flip error
中文摘要:
用无退相干子空间的方法抑制集体退相干,实现不受比特反转错误影响的通用量子计算。该方案基于腔电动力学系统,用囚禁于腔中的2个相邻原子编码1个逻辑比特,构造出抑制集体比特反转错误的4维无退相干子空间.通过调节外加光场与腔的耦合,在无退相干子空间中完成了2个非对易的单比特操作和控制相位门,实现了克服集体比特反转错误的通用量子计算。

英文摘要:
Universal quantum computation overcoming influnce of bit-flip error is realized by suppressing collective decoherence with decoherence-free subspace method. The scheme is based on cavity QED system. A logical bit is encoded by two adjacent atoms trapped in a cavity, and a four-dimensional decoherence-free subspace is constructed to suppress the collective bit reversal error. By adjusting the coupling between the external optical field and cavity, two noncommutative single-qubit operations and a controlled phase gate are implemented in decoherence-free subspace. Universal quantum computation overcoming the collective bit reversal error is realized.


文献类型: 期刊论文
正文语种: Chinese
收录类别: CSCD
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