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The most robust entangled state of light

S. J. van Enk·O. Hirota
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Abstract

We study how photon absorption losses degrade the bipartite entanglement of entangled states of light. We consider two questions: (i) what state contains the smallest average number of photons given a fixed amount of entanglement? and (ii) what state is the most robust against photon absorption? We explain why the two-mode squeezed state is the answer to the first question but not quite to the second question.

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S. J. van Enk, O. Hirota. 2005-02-17. The most robust entangled state of light. https://doi.org/10.1103/physreva.71.062322

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