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One-way Einstein-Podolsky-Rosen Steering

Published inPhysical review letters, vol. 112, no. 20, 200402
Publication date2014
Abstract

Einstein-Podolsky-Rosen steering is a form of quantum nonlocality exhibiting an inherent asymmetry between the observers, Alice and Bob. A natural question is then whether there exist entangled states which are one-way steerable, that is, Alice can steer Bob's state, but it is impossible for Bob to steer the state of Alice. So far, such a phenomenon has been demonstrated for continuous variable systems, but with a strong restriction on allowed measurements, namely, considering only Gaussian measurements. Here we present a simple class of entangled two-qubit states which are one-way steerable, considering arbitrary projective measurements. This shows that the nonlocal properties of entangled states can be fundamentally asymmetrical.

Citation (ISO format)
BOWLES, Joseph et al. One-way Einstein-Podolsky-Rosen Steering. In: Physical review letters, 2014, vol. 112, n° 20, p. 200402. doi: 10.1103/PhysRevLett.112.200402
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ISSN of the journal0031-9007
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