光子Fock态迭加光场的压缩性质

THE SQUEEZED PROPERTIES OF SUPERPOSITION STATES LIGHT FIELD BY PHOTON FOCK STATES

本文研究由光子Fock态构成的量子光场态|ψ>=α|m>+β|m+k>(m≥0,k≥1)的压缩效应,讨论了该迭加态光场存在二阶压缩以及振幅平方压缩的条件,同时研究了振幅平方压缩的独立性,指出振幅平方压缩是独立于二阶压缩和反聚束效应的又一新的非经典效应。

In this paper the squeezing effect of the quantized single mode light field states |φ=a|m>+β|m+k>(m≥0,k≥1) which consist of Fock states is studied. The condition that second order squeezing and amplitude-squared squeexing exist in the light field is discussed. Independence of amplitude-squared squeezing is studied and it is shown that the amplitude-squared squddzing is a new nonclassical effect which is independent of second order squeezing and antibunching effect.