Entanglement quasiprobabilities of squeezed light

Abstract

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.

References in corpus (1)

• Entanglement and permutational symmetry

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• Entanglement and phase properties of noisy N00N states
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• Quantum correlations in composite systems
• Operational Gaussian Schmidt-Number Witnesses
• Experimental Reconstruction of Entanglement Quasiprobabilities
• Entanglement verification of noisy N00N states
• Verifying bound entanglement of dephased Werner states
• Quantum entanglement as an extremal Kirkwood-Dirac nonreality