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Robustness of non-locality in many-body open quantum systems

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arxiv 2202.12079 v2 pith:EXTIK75J submitted 2022-02-24 quant-ph

Robustness of non-locality in many-body open quantum systems

classification quant-ph
keywords quantumcorrelationsopensystemsmany-bodymeasurementsnon-localnon-locality
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Non-locality consists in the existence of non-classical correlations between local measurements. So far, it has been investigated mostly in isolated quantum systems. Here we show that non-local correlations are present, can be detected and might be robust against noise also in many-body open quantum systems, both in the steady-state and in the transient regime. We further discuss the robustness of non-local correlations when the open quantum system undergoes repeated measurements, a relevant scenario for quantum cryptography.

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