Decoherence Suppression in Phase Decoherence Environment Using Weak Measurement and Quantum Measurement Reversal |
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| Authors: | Qiong Wang Jian-Sheng Tang Zhi He Ji-Bing Yuan |
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| Institution: | 1.Department of Junior Education,Changsha Normal University,Changsha,China;2.College of Physics and Electronics,Hunan University of Arts and Science,Changde,China;3.College of Education and Science,Hunan First Normal University,Changsha,China;4.College of Physics and Electronic Engineering,Hengyang Normal University,Hengyang,China |
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| Abstract: | Decoherence suppression from disturbance of the environment is an essential task in quantum information processing. We investigate decoherence suppression of a qubit system interacting with a heat bath with phase decoherence by employing the weak measurement (WM) and quantum measurement reversal (QMR) operation. We show explicitly that the qubit decoherence can be efficiently completely suppressed by means of the combination WM and QMR, which is independent of the form of the spectral density of the reservoir and the form of initial input state. |
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