【摘要】 最近预言的振幅压缩态由于可以具有比压缩相干态更小的光子数噪声而受到重视。本文用文献中最新提出的非经典光场的判据讨论了振幅压缩态的P表示特性,发现它本质上与光子数本征态一样,也是通过复平面一点上的奇异性来表现其非经典性的。更多还原

【Abstract】 Considerable interest has recently been focused on amplitude squeezed states because they have less photon number noises than in coherent squeezed states.In this paper we discuss the properties of P-representation for this kind of quantum states. It is found that the non-classicalities of amplitude-squeezed states are shown by the singularities of their P-representation at one point in the complex plane like in the case of photon numbereigea states.更多还原