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题名: Quantum control limited by quantum decoherence
作者: Xue, F ;  Yu, SX ;  Sun, CP
刊名: PHYSICAL REVIEW A
出版日期: 2006
卷号: 73, 期号:1, 页码:-
关键词: COMPUTATION ;  EVOLUTION
学科分类: Physics
通讯作者: Xue, F , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
部门归属: Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China
英文摘要: We describe quantum controllability under the influences of the quantum decoherence induced by the quantum control itself. It is shown that, when the controller is considered as a quantum system, it will entangle with its controlled system and then cause quantum decoherence in the controlled system. In competition with this induced decoherence, the controllability will be limited by some uncertainty relation in a well-armed quantum control process. In association with the phase uncertainty and the standard quantum limit, a general model is studied to demonstrate the possibility of realizing a decoherence-free quantum control with a finite energy within a finite time. It is also shown that if the operations of quantum control are to be determined by the initial state of the controller, then due to the decoherence which results from the quantum control itself, there exists a low bound for quantum controllability.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000235008900116
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/6059
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Xue, F,Yu, SX,Sun, CP. Quantum control limited by quantum decoherence[J]. PHYSICAL REVIEW A,2006,73(1):-.
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