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Journal of Baoji University of Arts and Sciences

Study on the properties of even-power Y-squeezing in a kind of multimode superposition state light field

Xiaowei Han

Published Jan 1, 2008• 0 citations
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Abstract

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.

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Acta Sinica Quantum Optica•Jan 1, 2002•0 citations
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.
In the paper,the properties of unequal-even-power N j-th power Y-squeezing in the first kind of asymmetrical multimode superposition state light field |Ψ I (ab) q  with the superposition of distinct two quantum states is studied in detail.It is found that if the squeezed power number N j is an even number,under some certain conditions the state  |Ψ I (ab) q  can display the effects of unequal-power N j-th power Y-squeezing that changes periodically.the result of even-power N-th power Y-squeezing of state  |Ψ I (ab) q  is only a particular example under the certain condition N j=N of this papers universal result.
In the paper, the properties of equal-order N-th power H-squeezing in a kind of intense asymmetrical multimode superposition state light field |Ψ (ab) I q with the superposition of macroscopically distinct two quantum states is studied in detail, By utilizing the theory of multimode squeezed states. It is found that if the products of squeezed order number N and cavity mode number q is an even number, under some conditions the state |Ψ (ab) I q can also present the effects of equal-order N-th Power H-squeezing in the first positive ponderance or second pvsitive ponderance.
The properties of unequal-power Nj-th power H-squeezing of a kind of multimode superposition state light field Ψ(2)〉q with the superposition of two states are studied in detail.It is found that,when the sum of the squeezing orders of each mode is even number,the multimode superposition state light field Ψ(2)〉q is always in Nj minimum uncertainty state;when the sum of the squeezing orders of each mode is odd number,under some conditions the multimode superposition state light field Ψ(2)〉q can also present Nj-th power H-squeezing that changes periodically.
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.
On the basis of reference 2, the paper probes the squeezing effects of unequal-order higher-power Y-squeezing in the second kind of multimode superposition state light field with the superposition of two quantum state by using the definition of multimode squeezing. It is found that when the the squeezing orders of each mode is even number, the state |Ψ (2) 2 q is always in N j-Y minimum uncertainty state; when the squeezing orders of each mode is odd number, under some conditions the state |Ψ (2) 2 q can also present N j-th power Y-squeezing that changes periodically; the result of reference 2 is only a particular example under the certain condition N j=N of this paper's universal results.