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arXiv quant-ph/0304182quant-ph
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量子概率测度和层析概率密度

Quantum probability measures and tomographic probability densities

G. G. Amosov, V. I. Man'ko

摘要:

最近提出的基于量子态层析概率分布的方法与量子信息理论中讨论的量子概率测度和正算子值测度方法密切相关。证明了与零差求积(辛量子测度)相关联的量子概率测度的分布函数的偏导数等于量子态的层析图。得到了自旋断层像与自旋态量子概率测度的类似关系。研究了辛量子测度的星积。导出了辛量子测度的演化方程。

英文摘要:

Introduced recently approach based on tomographic probability distribution of quantum states is shown to be closely related with the known notion of the quantum probability measures discussed in quantum information theory and positive operator valued measures approach. Partial derivative of the distribution function of quantum probability measure associated with the homodyne quadrature (symplectic quantum measure) is shown to be equal the tomogram of the quantum state. Analogous relation of the spin tomogram to quantum probability measure associated with spin state is obtained. Star-product of symplectic quantum measures is studied. Evolution equation for symplectic quantum measures is derived.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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