State-Independent Quantum Contextuality with Single Photons

被引：187
|
作者：
Amselem, Elias [1 ]
Radmark, Magnus [1 ]
Bourennane, Mohamed [1 ]
Cabello, Adan [2 ]
机构：
[1] Stockholm Univ, Dept Phys, S-10691 Stockholm, Sweden
[2] Univ Seville, Dept Fis Aplicada 2, E-41012 Seville, Spain
来源：
PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 16期
基金：
瑞典研究理事会;
关键词：
KOCHEN-SPECKER THEOREM; MECHANICAL DESCRIPTION; BELL INEQUALITIES; HIDDEN VARIABLES; PHYSICAL REALITY; VIOLATION; SEPARABILITY; PARTICLE;
D O I：
10.1103/PhysRevLett.103.160405
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We present an experimental state-independent violation of an inequality for noncontextual theories on single particles. We show that 20 different single-photon states violate an inequality which involves correlations between results of sequential compatible measurements by at least 419 standard deviations. Our results show that, for any physical system, even for a single system, and independent of its state, there is a universal set of tests whose results do not admit a noncontextual interpretation. This sheds new light on the role of quantum mechanics in quantum information processing.
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页数：4
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