相位平移算符及其相干态性质

The Phase Displacement Operator and the Properties of Their Coherent State

利用有限维的Ｐ－Ｂ相位算符，我们定义相位的湮灭和产生算符、＋，将此算符与粒子数的湮灭和产生算符、＋进行比较．我们引进相应的相位平移算符，将它作用在零相位上得相位相干态．我们讨论算符在此态下的压缩性质．

Utilizing P-B phase operators of a finite basis set, we define the creation(+)and annihilation( ) operators of the phase quanta respectively. Then we compare these operators with the photon creation(a+) and annihilation( ) operators. We find they have some similar properties. So we can introduce phase displacement operators to define phase coherent states. Finally we investigate operator squeezing properties under these states.