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Multipartite entanglement encoded in the photon-number basis by sequential excitation of a three-level system

Alan C. Santos, Christian Schneider, R. Bachelard, Ana Predojević, and Carlos Antón-Solanas

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Abstract

We propose a general scheme to generate entanglement encoded in the photon-number basis, via a sequential resonant two-photon excitation of a three-level system. We apply it to the specific case of a quantum dot three-level system, which can emit a photon pair through a biexciton–exciton cascade. The state generated in our scheme constitutes a tool for secure communication, as the multipartite correlations present in the produced state may provide an enhanced rate of secret communication with respect to a perfect GHZ state.

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Supplementary Material (1)

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Supplement 1       Additional discussions

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