物理学报Issue(8)：1-7,7.DOI:10.7498/aps.64.080303
二项-负二项组合光场态的光子统计性质及其在量子扩散通道中的生成∗
Statistical prop erties of binomial and negative-binomial combinational optical field state and its generation in quantum diffusion channel
摘要
Abstract
According to the combinational binomial-negative-binomial distribution, we propose a binomial-negative-binomial combinational optical field state, which can be generated in the process of a Fock state |m⟩⟨m| passing through a quantum-mechanical diffusion channel. We derive the second-order coherence degree formula, g(2) (t)=2− m2+m(m+κt)2 , which is the diffusion constant. We find that in the process of the Fock state undergoing quantum diffusion and becoming classical, the corresponding photon statistics evolves from sub-Poissonian distribution to Poisson distribution and finally goes to a chaotic state. We also find that the more photons in the initial Fock state, the longer time is needed for quantum decoherence.关键词
二项-负二项组合光场态/二阶相干度/亚泊松分布/泊松分布Key words
binomial-negative-binomial combinational optical field state/second-order coherence/Pois-son distribution/sub-Poissonian distribution引用本文复制引用
范洪义,吴泽..二项-负二项组合光场态的光子统计性质及其在量子扩散通道中的生成∗[J].物理学报,2015,(8):1-7,7.基金项目
国家自然科学基金(批准号:11175113)资助的课题.* Project supported by the National Natural Science Foundation of China (Grant No.11175113) （批准号:11175113）
