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EPR-steering: closing the detection loophole with non-maximally entangled states and arbitrary low efficiency

Quantum steering inequalities allow to demonstrate the presence of entanglement between two parties when one of the two measurement device is not trusted. In this paper we show that quantum steering can be demonstrated for arbitrary low detection efficiency by using two-qubit non-maximally entangled states. Our result can have important applications in one-sided device-independent quantum key distribution.

preprint2012arXivOpen access
Giuseppe Vallone
quant-ph
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Giuseppe Vallone

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