使用一个干净的量子比特对量子系综进行语境性测试。

Testing contextuality on quantum ensembles with one clean qubit.

机构信息

Institute for Quantum Computing and Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, N2L3G1, Canada.

出版信息

Phys Rev Lett. 2010 Apr 23;104(16):160501. doi: 10.1103/PhysRevLett.104.160501.

DOI:10.1103/PhysRevLett.104.160501

PMID:20482033

Abstract

We present a protocol to evaluate the expectation value of the correlations of measurement outcomes for ensembles of quantum systems, and use it to experimentally demonstrate--under an assumption of fair sampling--the violation of an inequality that is satisfied by any noncontextual hidden-variables theory. The experiment is performed on an ensemble of molecular nuclear spins in the solid state, using established nuclear magnetic resonance techniques for quantum-information processing.

摘要

我们提出了一种评估量子系统集合的测量结果相关性的期望值的协议，并利用它在公平采样的假设下，实验性地证明了任何非局域隐变量理论都满足的不等式的违反。该实验是在固态中的分子核自旋集合上进行的，使用了已建立的核磁共振技术进行量子信息处理。