1206.0165 (J. Sperling et al.)

Entanglement quasiprobabilities of squeezed light    [PDF]

J. Sperling, W. Vogel

We demonstrate the feasibility to completely characterize entanglement by negativities of quasiprobabilities. This requires the complete solution of a sophisticated mathematical problem, the so-called separability eigenvalue problem. Its solution is obtained for a non-Gaussian continuous variable quantum state, a two-mode squeezed state undergoing dephasing. This is a standard scenario for experiments with quantum-correlated radiation fields.

View original: http://arxiv.org/abs/1206.0165