Decoherence of two Josephson charge qubits coupled via σxσx-type coupling and exposed to σx noise -: art. no. 052309

被引：3
|
作者：
Abliz, A
Li, SS
Sun, LL
Feng, SL
Zheng, HZ
机构：
[1] Chinese Acad Sci, Inst Semicond, State Key Lab Superlattices & Microstruct, Beijing 100083, Peoples R China
[2] Xinjiang Normal Univ, Sch Math Phys & Informat Sci, Urumqi 830054, Peoples R China
来源：
PHYSICAL REVIEW A | 2004年 / 69卷 / 05期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1103/PhysRevA.69.052309
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Decoherence properties of two Josephson charge qubits coupled via the sigma(x)sigma(x) type are investigated. Considering the special structure of this new design, the dissipative effects arising from the circuit impedance providing the fluxes for the qubits' superconducting quantum interference device loops coupled to the sigma(x) qubit variables are considered. The results show that the overall decoherence effects are significantly strong in this qubit design. It is found that the dissipative effects are stronger in the case of coupling to two uncorrelated baths than are found in the case of one common bath.
引用
收藏
页码：052309 / 1
页数：6
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