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题名: Engineering quantum decoherence of charge qubit via a nanomechanical resonator
作者: Wang, YD ;  Gao, YB ;  Sun, CP
刊名: EUROPEAN PHYSICAL JOURNAL B
出版日期: 2004
卷号: 40, 期号:3, 页码:321-326
关键词: STATES ;  SUPERPOSITION ;  COLLAPSE ;  MOTION ;  FIELD
学科分类: Physics
通讯作者: Wang, YD , 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; Beijing Univ Technol, Dept Appl Phys, Beijing 100022, Peoples R China
英文摘要: 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.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000224549700013
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/14008
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:
Wang, YD,Gao, YB,Sun, CP. Engineering quantum decoherence of charge qubit via a nanomechanical resonator[J]. EUROPEAN PHYSICAL JOURNAL B,2004,40(3):321-326.
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