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One-way Einstein-Podolsky-Rosen Steering

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arxiv 1402.3607 v3 pith:M4T6JX64 submitted 2014-02-14 quant-ph

classification quant-ph
keywords aliceeinstein-podolsky-rosenentangledone-waystatestatessteersteering
verification ladder T0 review T1 audit T2 compute T3 formal
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Einstein-Podolsky-Rosen steering is a form of quantum nonlocality exhibiting an inherent asymmetry between the observers, Alice and Bob. We present a simple class of entangled two-qubit states which are one-way steerable, considering arbitrary projective measurements. That is, Alice can steer the state of Bob, but it is impossible for Bob to steer Alice's state. This shows that the nonlocal properties of entangled states can be fundamentally asymmetrical.

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