The anti standard-ordered distribution function in the Paul trap and its non-classical indicator
Material and Energy Research Center (MERC), P.O. Box
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Received in final form: 15 July 2012
Published online: 11 October 2012
The anti standard-ordered distribution function is calculated in the Paul trap. We show that the real part of the ground state distribution function can take negative values in phase space, which reveals the non-classical nature of this system. This negativity is absent in its Wigner counterpart. The physical behaviour of this non-classicality resembles the uncertainty principle.
Key words: Quantum Optics
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag 2012