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Gao, YB; Wang, YD; Sun, CP; Gao, YB , Beijing Univ Technol, Dept Appl Phys, Beijing 100022, Peoples R China.
Nonlinear mechanism of charge-qubit decoherence in a lossy cavity: Quasi-normal-mode approach
Source PublicationPHYSICAL REVIEW A
KeywordMacroscopic Quantum States Cooper-pair-box Josephson-junction
AbstractFrom the viewpoint of quasinormal modes, we describe a decoherence mechanism of charge qubit of Josephson junctions (JJ) in a lossy microcavity, which can appear in a realistic experiment for quantum computation based on a JJ qubit. We show that nonlinear coupling of a charge qubit to the quantum cavity field can result in additional dissipation of the resonant mode due to the effective interaction between those nonresonant modes and the resonant mode, which is induced by the charge qubit itself. We calculate the characteristic time of the decoherence by making use of the system plus bath method.
2005
ISSN1050-2947
Volume71Issue:3Pages:-
Subject AreaPhysics
Indexed BySCI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/13867
Collection理论物理所科研产出_SCI论文
Corresponding AuthorGao, YB , Beijing Univ Technol, Dept Appl Phys, Beijing 100022, Peoples R China.
Recommended Citation
GB/T 7714
Gao, YB,Wang, YD,Sun, CP,et al. Nonlinear mechanism of charge-qubit decoherence in a lossy cavity: Quasi-normal-mode approach[J]. PHYSICAL REVIEW A,2005,71(3):-.
APA Gao, YB,Wang, YD,Sun, CP,&Gao, YB , Beijing Univ Technol, Dept Appl Phys, Beijing 100022, Peoples R China..(2005).Nonlinear mechanism of charge-qubit decoherence in a lossy cavity: Quasi-normal-mode approach.PHYSICAL REVIEW A,71(3),-.
MLA Gao, YB,et al."Nonlinear mechanism of charge-qubit decoherence in a lossy cavity: Quasi-normal-mode approach".PHYSICAL REVIEW A 71.3(2005):-.
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