A new finite-dimensional thermal coherent state and its Wigner distribution function |
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Authors: | Meng Xiang-Guo Wang Ji-Suo Liang Bao-Long |
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Affiliation: | Department of Physics, Liaocheng University, Liaocheng 252059, China; College of Physics and Engineering, Qufu Normal University, Qufu 273165, China |
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Abstract: | This paper constructs a new type of finite-dimensional thermal coherent states (FDTCS), which differs from the proceeding thermal coherent state in construction, as realisations of SU(2) Lie algebra. Using the technique of integration within an ordered product of operator, it investigates the orthonormality and completeness relation of the FDTCS. Based on the thermal Wigner operator in the thermal entangled state representation, the Wigner function of the FDTCS is obtained. The nonclassical properties of the FDTCS are discussed in terms of the negativity of its Wigner function. |
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Keywords: | new finite-dimensional thermal coherent state thermal entangled state representation Wigner distribution function |
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