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Unbounded sequence of observers exhibiting Einstein-Podolsky-Rosen steering

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Published in Physical review, A, Atomic, molecular, and optical physics. 2019, vol. 99, no. 022317
Abstract A sequential steering scenario is investigated, where multiple Bobs aim at demonstrating steering using successively the same half of an entangled quantum state. With isotropic entangled states of local dimension d, the number of Bobs that can steer Alice is found to be NBob∼d/logd, thus leading to an arbitrary large number of successive instances of steering with independently chosen and unbiased inputs. This scaling is achieved when considering a general class of measurements along orthonormal bases, as well as complete sets of mutually unbiased bases. Finally, we show that similar results can be obtained in an anonymous sequential scenario, where none of the Bobs know their position in the sequence.
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SHENOY, Akshata Hejamadi et al. Unbounded sequence of observers exhibiting Einstein-Podolsky-Rosen steering. In: Physical Review. A, 2019, vol. 99, n° 022317. doi: 10.1103/PhysRevA.99.022317 https://archive-ouverte.unige.ch/unige:127284

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Deposited on : 2019-12-03

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