Higher-order properties and Bell-inequality violation for the three-mode enhanced squeezed state

Details Higher-order properties and Bell-inequality violation for the three-mode enhanced squeezed state Higher-order properties and Bell-inequality violation for the three-mode enhanced squeezed state

2009-11-27

arxiv.org/abs/0911.5323v1

Physics

Quantum Physics

Scientific paper

By extending the usual two-mode squeezing operator $S_{2}=\exp [ i\lambda (Q_{1}P_{2}+Q_{2}P_{1}) ] $ to the three-mode squeezing operator $S_{3}=\exp {i\lambda [ Q_{1}(P_{2}+P_{3}) +Q_{2}(P_{1}+P_{3}) +Q_{3}(P_{1}+P_{2}) ]} $, we obtain the corresponding three-mode squeezed coherent state. The state's higher-order properties, such as higher-order squeezing and higher-order sub-Possonian photon statistics, are investigated. It is found that the new squeezed state not only can be squeezed to all even orders but also exhibits squeezing enhancement comparing with the usual cases. In addition, we examine the violation of Bell-inequality for the three-mode squeezed states by using the formalism of Wigner representation.

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