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Paper detail

Does "quantum nonlocality without entanglement" have quantum origin?

Quantum separable operations are defined as those that cannot produce entanglement from separable states, and it is known that they strictly surpass local operations and classical communication (LOCC) in a number of tasks, which is sometimes referred to as "quantum nonlocality without entanglement." Here we consider a task with such a gap regarding the trade-off between state discrimination and preservation of entanglement. We show that this task along with the gap has an analogue in a purely classical setup, indicating that the quantum properties are not essential in the existence of a nonzero gap between the separable operations and LOCC.

preprint2013arXivOpen access
Masato KoashiKoji AzumaShinya NakamuraNobuyuki Imoto
quant-ph
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Masato KoashiKoji AzumaShinya NakamuraNobuyuki Imoto

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