| Short-Time Effects of Environment to Josephson Charge Qubit： A Master Equation Approach |
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| 基金项目： | The project supported by National Natural Science Foundation of China under Grant No. 10675066 and K.C. Wong Magna Foundation in Ningbo University |
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| 摘 要： | In this paper we investigate an environmental effects to Josephson charge qubit （JCQ） when the environment is taken as the Ohmic bath. At first, we derive the master equation from a JCQ-bath model. Then we investigate the coefficients of the equations that describe the shift in frequency, diffusive, decoherence, and so on. It is shown that our result on decoherence agrees with experimental one very well as the time is short enough.
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| 关 键 词： | 脱散技术 电荷 方程式 短时间作用 环境变换 |
Short-Time Effects of Environment to Josephson Charge Qubit： A Master Equation Approach |
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| Authors: | LI Zhi-Qiang LIANG Xian-Ting |
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| Institution: | Department of Physics and Institute of Modern Physics, Ningbo University, Ningbo 315211, China |
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| Abstract: | decoherence, master equation, Josephson charge qubit |
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| Keywords: | decoherence master equation Josephson charge qubit |
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