摘要
本文研究了高斯型Q函数光场的信息熵和Kerr介质中常见量子态保真度的时间演化,结果表明,高斯型Q函数光场的边际信息熵可作为场压缩的量度,并满足最小熵不确定关系,熵随总噪声的增加而增加,随压缩的增大而减小;不同量子态在Kerr介质中传插时的保真度显著不同,但都具有振荡特性。
The information entropy of light field states with Gaussian Q function and the time evolution of fidelities of common quantum states in Kerr medium are discussed in this paper. The marjinal entropies of this kind of light can be adopted as a measure of squeezing and fulfill the minimum entropic uncertainty. The information entropy increases with the increase of total fluctuation and decreases with the increase of squeezing. The fidelities of various quantum states are quite different in Kerr medium, but each is vibrating.
出处
《量子光学学报》
CSCD
1996年第1期24-31,共8页
Journal of Quantum Optics
关键词
信息熵
边际概率分布
光场
量子态
information entropy, marjinal probability distribution, fidelity, squeezing , Kerr medium
