Peres-Horodecki separability criterion for continuous variable systems

Details Peres-Horodecki separability criterion for continuous variable systems Peres-Horodecki separability criterion for continuous variable systems

1999-09-14

arxiv.org/abs/quant-ph/9909044v1

Physics

Quantum Physics

6 pages, no figures

Scientific paper

10.1103/PhysRevLett.84.2726

The Peres-Horodecki criterion of positivity under partial transpose is studied in the context of separability of bipartite continuous variable states. The partial transpose operation admits, in the continuous case, a geometric interpretation as mirror reflection in phase space. This recognition leads to uncertainty principles, stronger than the traditional ones, to be obeyed by all separable states. For all bipartite Gaussian states, the Peres-Horodecki criterion turns out to be necessary and sufficient condition for separability.

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