Spontaneous relaxation of a charge qubit under electrical measurement |
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| Authors: | Li Xin-Qi Cui Ping Yan YiJing |
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| Affiliation: | State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing 100083, China. |
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| Abstract: | In this work we first derive a generalized conditional master equation for quantum measurement by a mesoscopic detector, then study the readout characteristics of qubit measurement where a number of remarkable new features are found. The work would, in particular, highlight the qubit spontaneous relaxation effect induced by the measurement itself rather than an external thermal bath. |
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