Inseparability criterion for continuous variable systems
classification
🪐 quant-ph
keywords
criterioncontinuousinseparabilityvariableconditionstatessufficientsystems
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An inseparability criterion based on the total variance of a pair of Einstein-Podolsky-Rosen type operators is proposed for continuous variable systems. The criterion provides a sufficient condition for entanglement of any two-party continuous variable states. Furthermore, for all the Gaussian states, this criterion turns out to be a necessary and sufficient condition for inseparability.
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