An Explanation For Non-classicality of States

Details An Explanation For Non-classicality of States An Explanation For Non-classicality of States

2012-04-17

arxiv.org/abs/1204.3782v1

Physics

Quantum Physics

Scientific paper

A new theorem on the non-classicality depth of states has been proved. We show that if $W_{\hat \rho} (\alpha_m,s_m)=0$ exist for some value of the ordering parameter $s$ at some phase-space point $\alpha_m$, and if $W_{\hat \rho} (\alpha,s_m)$ is an acceptable quasi-classical distribution, the non-classicality of $\hat \rho$ in parallel with Lee's non-classicality depth is then given by $\tau_m=(1 - s_m)/2$. In this way, a general examination of the effects of the single-photon-addition and -subtraction operations has been studied. The theorem, indeed, provides a theoretical background for generating quantum states of arbitrary non-classicality depth.

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