双模场真空态与相干态的叠加态的非经典性质

Non-classical Properties of Superposed State of Two-mode Vacuum State and Two-mode Coherent State

构造了辐射场的一类新的非经典态,称之为双模真空态与相干态的叠加态.对该态做了详细的数值计算以及量子统计性质的讨论.构造了双模真空态与相干态的叠加态的数学结构,讨论了它的非经典性质,即压缩效应、亚泊松分布、两模间二阶相关函数.数值计算结果表明,双模真空态与相干态的叠加态具有非常显著的非经典性质,因此双模真空态与相干态的叠加态是一类新的非经典光场态.

A new class of non - classical state of the radiation field, called as superposed state of two -mode vacuum state and two - mode coherent state was constructed. The mathematical structure of the superposed state of two- mode vacuum state and two -mode coherent statewas constructed, and its non -classical properties were discussed, namely squeezed effect, sub - Poissonian distribution, the second - order cross correlation function between the two modes. The numerical results show that the superposed state of two - mode vacuum state and two -mode coherent state possesses very obvious non -classical properties, Therefore it is a class of new non- classical quantum state.