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Xue, F; Yu, SX; Sun, CP; Xue, F , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
Quantum control limited by quantum decoherence
Source PublicationPHYSICAL REVIEW A
KeywordComputation Evolution
AbstractWe 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.
2006
ISSN1050-2947
Volume73Issue:1Pages:-
Subject AreaPhysics
Indexed BySCI
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Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/6059
Collection理论物理所科研产出_SCI论文
Corresponding AuthorXue, F , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Xue, F,Yu, SX,Sun, CP,et al. Quantum control limited by quantum decoherence[J]. PHYSICAL REVIEW A,2006,73(1):-.
APA Xue, F,Yu, SX,Sun, CP,&Xue, F , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.(2006).Quantum control limited by quantum decoherence.PHYSICAL REVIEW A,73(1),-.
MLA Xue, F,et al."Quantum control limited by quantum decoherence".PHYSICAL REVIEW A 73.1(2006):-.
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