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arXiv · 1610.06883

Many-particle entanglement criterion for superradiant-like states

Mehmet Emre Tasgin
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Abstract

We derive a many-particle inseparability criterion for mixed states using the relation between single-mode and many-particle nonclassicalities. It works very well not only in the vicinity of the Dicke states, but also for the superposition of them: superradiant ground state of finite/infinite number of particles and time evolution of single-photon superradiance. We also obtain a criterion for ensemble-field entanglement which works fine for such kind of states. Even though the collective excitations of the many-particle system is sub-Poissonian --which results in entanglement-- the wave function displays bunching.

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Mehmet Emre Tasgin. 2016-10-21. Many-particle entanglement criterion for superradiant-like states. https://doi.org/10.1103/physrevlett.119.033601

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