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arXiv quant-ph/0309165quant-ph
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扩展Fock空间上的数相Wigner函数

Number-phase Wigner function on extended Fock space

Kiyotaka Kakazu

摘要:

在相态的基础上,给出了迄今为止发现的两个数相Wigner函数的正确积分表达式。这些正确的形式是从那些定义在扩展的Fock空间与负数状态。与维格纳的原始条件类似的条件不能唯一地导致数相函数。为了明确地表明这一事实,我们提出了另一个满足所有这些条件的函数。数值结果还表明,数相Wigner函数的不唯一性是由相位周期性问题引起的。

英文摘要:

On the basis of the phase states, we present the correct integral expressions of the two number-phase Wigner functions discovered so far. These correct forms are derived from those defined in the extended Fock space with negative number states. The analogous conditions to Wigner's original ones cannot lead to the number-phase function uniquely. To show this fact explicitly, we propose another function satisfying all these conditions. It is also shown that the ununiqueness of the number-phase Wigner function result from the phase-periodicity problem.

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