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Engineering quantum decoherence of charge qubit via a nanomechanical resonator
Wang, YD; Gao, YB; Sun, CP; Wang, YD , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.
2004
发表期刊EUROPEAN PHYSICAL JOURNAL B
ISSN1434-6028
卷号40期号:3页码:321-326
摘要We propose a theoretical scheme to observe the loss of quantum coherence through the coupling of the superconducting charge qubit system to a nanomechanical resonator (NAMR), which has already been successfully fabricated in experiment and is convenient to manipulate. With a similar form to the usual cavity QED system, this qubit-NAMR composite system with engineered coupling exhibits the collapse and revival phenomenon in a progressive decoherence process. Corresponding to the two components of superposition of the two charge eigenstates, the state of the nanomechanical resonator evolves simultaneously towards two distinct quasi-classical states. Therefore the generalized "which way" detection by the NAMR induces the quantum decoherence of the charge qubit.
部门归属Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Beijing Univ Technol, Dept Appl Phys, Beijing 100022, Peoples R China
关键词States Superposition Collapse Motion Field
学科领域Physics
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收录类别SCI
WOS记录号WOS:000224549700013
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/14008
专题理论物理所SCI论文
通讯作者Wang, YD , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.
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GB/T 7714
Wang, YD,Gao, YB,Sun, CP,et al. Engineering quantum decoherence of charge qubit via a nanomechanical resonator[J]. EUROPEAN PHYSICAL JOURNAL B,2004,40(3):321-326.
APA Wang, YD,Gao, YB,Sun, CP,&Wang, YD , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China..(2004).Engineering quantum decoherence of charge qubit via a nanomechanical resonator.EUROPEAN PHYSICAL JOURNAL B,40(3),321-326.
MLA Wang, YD,et al."Engineering quantum decoherence of charge qubit via a nanomechanical resonator".EUROPEAN PHYSICAL JOURNAL B 40.3(2004):321-326.
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