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Wigner functions in phase space are reconstructed for the excited coherent states,which are generated by applying the inverse of k-Boson operators repeatedly to the coherent states. The non-classicality of these states is discussed by calculating their Wigner functions in Fock-state space. Numerical results show that these excited coherent states always reveal non-classical characteristics,no matter whether the excited number k is even or odd,and also the corresponding non-classicality is more obvious with the number k increasing.
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Keywords:
- non-classical quantum states /
- excited coherent states /
- Wigner function /
- non-classicality







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