Experimental detection of steerability in Bell local states with two measurement settings

被引：11

作者：

Orieux, Adeline ^{[1
,2
]}

Kaplan, Marc ^{[1
,3
]}

Venuti, Vivien ^{[4
]}

Pramanik, Tanumoy ^{[5
]}

Zaquine, Isabelle ^{[4
]}

Diamanti, Eleni ^{[1
]}

机构：

[1] Sorbonne Univ, CNRS, LIP6, F-75005 Paris, France

[2] Sorbonne Paris Cite, Univ Paris Diderot, CNRS, IRIF, F-75013 Paris, France

[3] Univ Edinburgh, Sch Informat, Edinburgh, Midlothian, Scotland

[4] Univ Paris Saclay, Telecom ParisTech, LTCI, F-75013 Paris, France

[5] KIST, Ctr Quantum Informat, Seoul 02792, South Korea

来源：

JOURNAL OF OPTICS | 2018年 / 20卷 / 04期

基金：

英国工程与自然科学研究理事会;

关键词：

quantum nonlocality; quantum entanglement; quantum steering; entangled photon source; PROBABILITY RELATIONS; SEPARATED SYSTEMS; QUANTUM; ENTANGLEMENT; INEQUALITY;

D O I：

10.1088/2040-8986/aab031

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Steering, a quantum property stronger than entanglement but weaker than non-locality in the quantum correlation hierarchy, is a key resource for one-sided device-independent quantum key distribution applications, in which only one of the communicating parties is trusted. A fine-grained steering inequality was introduced in (2014 Phys. Rev. A 90 050305), enabling for the first time the detection of steering in all steerable two-qubit Werner states using only two measurement settings. Here, we numerically and experimentally investigate this inequality for generalized Werner states and successfully detect steerability in a wide range of two-photon polarization-entangled Bell local states generated by a parametric down-conversion source.

引用

页数：9

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