【摘 要】
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We investigate how displaced thermal states(DTSs) evolve in a laser channel. Remarkably, the initial DTS, an example of a mixed state, still remains mixed and t
【机 构】
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Shandong Provincial Key Laboratory of Laser Polarization and Information Technology, College of Phys
【出 处】
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Chinese Physics B
论文部分内容阅读
We investigate how displaced thermal states(DTSs) evolve in a laser channel. Remarkably, the initial DTS, an example of a mixed state, still remains mixed and thermal. At long times, they finally decay to a highly classical thermal field only related to the laser parameters κ and g. The normal ordering product of density operator of the DTS in the laser channel leads to obtaining the analytical time-evolution expressions of the photon number, Wigner function, and von Neumann entropy. Also, some interesting results are presented via numerically investigating these explicit time-dependent expressions.
We investigate how displaced thermal states (DTSs) evolve in a laser channel. Remarkably, the initial DTS, an example of a mixed state, still remain mixed and thermal. At long times, they finally decay to a highly classical thermal field only related to The laser ordering κ and g. The normal ordering product of density operator of the DTS in the laser channel leads to obtaining the analytical time-evolution expressions of the photon number, Wigner function, and von Neumann entropy. Also, some interesting results are presented via numerically investigating these explicit time-dependent expressions.
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