Acta Optica Sinica, Volume. 27, Issue 9, 1700(2007)
Wigner Functions of Two-Mode Excited Squeezed Vauccm States
Using the Wigner operator in the entangled-state representation we construct the Wigner functions of the two-mode excited squeezed vacuum states (TESVS). In term of the variations of the Wigner functions with respect to the parameters m, n and r in the ρ-γ phase space, the quantum interference properties and squeezing effects of the TESVS are discussed. The results show that, for different values of m and n, the TESVS have different quantum interference effects, however for different squeezing parameters r the TESVS exhibit different squeezing effects. Furthermore, the physical meaning of the Wigner functions is identified according to the marginal distributions of the Wigner functions for the TESVS.
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[in Chinese], [in Chinese], [in Chinese]. Wigner Functions of Two-Mode Excited Squeezed Vauccm States[J]. Acta Optica Sinica, 2007, 27(9): 1700