摘要
以参数化方式[y]=(qy-1)/(q-1)定义q玻色湮灭算符aq,生成相应的q相干态,找出能产生并保持这类q相干态的体系的哈密顿量。研究aqk(k≥1)的正交归一本征态的数学结构和量子起伏性质,发现这些本征态中只有偶q相干态存在通常的压缩效应,并且当q<1时,场的两个正交分量在各态中的量子起伏可以同时有小于相干态的最小不确定度(1/4),有q压缩效应。
By using a new parametrization way, =(q y-1)/(q-1), the q Boson annihilation operator was defined, and a new q coherent state was constructed. The system Hamiltonian that can produce and maintain the q coherent state was found. We studied the mathematical construction and the quantum fluctuation characteristic of the orthonormalization eigenstates of a q k (k≥1). It is found that the only even q coherent states have usual squeezing effect, and when the parameter q<1, the quantum fluctuation of both quadrature components of the field for each state may be simultaneouly smaller than the minimum uncertainly value (1/4) of the coherent state. These eigenstates have q squeezing.
出处
《光学学报》
EI
CAS
CSCD
北大核心
1997年第12期1642-1647,共6页
Acta Optica Sinica