A new approach to obtaining positive-definite Wigner operator for two entangled particles with different masses  

A new approach to obtaining positive-definite Wigner operator for two entangled particles with different masses

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作  者:范洪义 徐学翔 袁洪春 王帅 王震 许朋 姜年权 

机构地区:[1]Department of Physics,Shanghai Jiao Tong University [2]College of Physics & Communication Electronics,Jiangxi Normal University [3]College of Physics and Electric Information,Wenzhou University

出  处:《Chinese Physics B》2011年第7期47-51,共5页中国物理B(英文版)

基  金:Project supported by the National Natural Science Foundation of China (Grant Nos.10874174 and 10947017/A05);the Key Programs Foundation of Ministry of Education of China (Grant No.210115)

摘  要:Based on our previously proposed Wigner operator in entangled form, we introduce the generalized Wigner operator for two entangled particles with different masses, which is expected to be positive-definite. This approach is able to convert the generalized Wigner operator into a pure state so that the positivity can be ensured. The technique of integration within an ordered product of operators is used in the discussion.Based on our previously proposed Wigner operator in entangled form, we introduce the generalized Wigner operator for two entangled particles with different masses, which is expected to be positive-definite. This approach is able to convert the generalized Wigner operator into a pure state so that the positivity can be ensured. The technique of integration within an ordered product of operators is used in the discussion.

关 键 词:positive-definite Wigner operator entangled form marginal distribution 

分 类 号:O413.1[理学—理论物理]

 

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