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A new approach to obtaining positive-definite Wigner operator for two entangled particles with different masses |
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| Authors: | Fan Hong-Yi Xu Xue-Xiang Yuan Hong-Chun Wang Shuai Wang Zhen Xu Peng and Jiang Nian-Quan |
| Institution: | Department of Physics, Shanghai Jiao Tong University, Shanghai 200030, China; College of Physics & Communication Electronics, Jiangxi Normal University, Nanchang 330022, China; College of Physics and Electric Information, Wenzhou University, Wenzhou 325035, China |
| Abstract: | 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. |
| Keywords: | positive-definite Wigner operator entangled form marginal distribution |
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