Conclusive Experimental Demonstration of One-Way Einstein-Podolsky-Rosen Steering

Tischler, N, Ghafari, F, Baker, T, Slussarenko, S, Patel, R, Weston, M, Wollmann, S, Shalm, L, Verma, V, Nam, S, Nguyen, H, Wiseman, H and Pryde, G 2018, 'Conclusive Experimental Demonstration of One-Way Einstein-Podolsky-Rosen Steering', Physical Review Letters, vol. 121, no. 10, pp. 1-6.

Document type: Journal Article
Collection: Journal Articles

Title Conclusive Experimental Demonstration of One-Way Einstein-Podolsky-Rosen Steering
Author(s) Tischler, N
Ghafari, F
Baker, T
Slussarenko, S
Patel, R
Weston, M
Wollmann, S
Shalm, L
Verma, V
Nam, S
Nguyen, H
Wiseman, H
Pryde, G
Year 2018
Journal name Physical Review Letters
Volume number 121
Issue number 10
Start page 1
End page 6
Total pages 6
Publisher American Physical Society
Abstract Einstein-Podolsky-Rosen steering is a quantum phenomenon wherein one party influences, or steers, the state of a distant party's particle beyond what could be achieved with a separable state, by making measurements on one-half of an entangled state. This type of quantum nonlocality stands out through its asymmetric setting and even allows for cases where one party can steer the other but where the reverse is not true. A series of experiments have demonstrated one-way steering in the past, but all were based on significant limiting assumptions. These consisted either of restrictions on the type of allowed measurements or of assumptions about the quantum state at hand, by mapping to a specific family of states and analyzing the ideal target state rather than the real experimental state. Here, we present the first experimental demonstration of one-way steering free of such assumptions. We achieve this using a new sufficient condition for nonsteerability and, although not required by our analysis, using a novel source of extremely high-quality photonic Werner states.
Subject Mathematical Sciences not elsewhere classified
DOI - identifier 10.1103/PhysRevLett.121.100401
Copyright notice © 2018 American Physical Society
ISSN 0031-9007
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