Superposition of number and squeezed states of the quantized light field

Jiliang Zhang

In this paper,the multimode squeezed state theory established by yang Zhiyong and Hou Xun and published in Acta Photonica Sinica is utilized to study the effects of Generalized nonlinear N-th power sum squeezing is seventh kind of Multimode superposition state light field which is composed of the linear superpositions of multimode coherent state and contrary state of multimode imaginary coherent state . It is found that under the conditions of the products q ·N=2p and p=2m+l(m=0,1,2,3, …)where q represents the cavity-mode number and N represents the squeezing power number,while some certain quantization conditions are satisfied by the initial phase sum of each mode,and while the mixing phase sum + made of the initial phase difference( ) between the two components of the state and the mean photon number of each multimode coherent state light field mentioned above changes continuously in the foxed and closed region,the state can always present the effects of generalized nonlinear N-th power sum squeezing that chandes periodically.This shows that the state is a typical multimode nonchasical light field.

Guang‐Can Guo, Peizhou Huang, Dun Yao

Ardiley Torres Avelar, T. M. Rocha Filho, B. Baseia

Xiaowei Han

By using the theory of multimode squeezed states,the properties of unequal-power Nj-th power sum-squeezing of multimode superposition state light field |ψ(α)q with the superposition of two quantum states in medium was studied.It was found that when the sum of the squeezing power of each mode was even number,the multimode superposition state light field |ψ(α)q was always in Nj minimum uncertainty state;when the sum of the squeezing orders of each mode was odd number,under some conditions,the multimode superposition state light field |ψ(α)q could also present Nj-th power sum-squeezing that changed periodically in medium.

Xiaowei Han

Aim The properties of even-power Y-squeezing in the multimode superposition state light field |Ψ(ab)〉q with the superposition of distinct two quantum states are studied in detail.Methods Account analytical induction and summarization by utilizing the theory of multimode squeezed states.Results The properties of even-power Y-squeezing is found in the multimode superposition state light field |Ψ(ab)〉q.Conclusion The squeezed power number Nj is an even number,under some certain conditions the state |Ψ(ab)〉q can display the effects of even-power Y-squeezing.

Carlton M. Caves