实验性测量设备无关的纠缠检测。

Experimental measurement-device-independent entanglement detection.

作者信息

Nawareg Mohamed, Muhammad Sadiq, Amselem Elias, Bourennane Mohamed

机构信息

1] Physics department, Stockholm University, S-10691, Stockholm, Sweden [2] Instytut Fizyki Teoretycznej i Astrofizyki, Uniwersytet Gdański, PL-80-952 Gdańsk, Poland.

Physics department, Stockholm University, S-10691, Stockholm, Sweden.

出版信息

Sci Rep. 2015 Feb 4;5:8048. doi: 10.1038/srep08048.

DOI:10.1038/srep08048

PMID:25649664

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4316167/

Abstract

Entanglement is one of the most puzzling features of quantum theory and of great importance for the new field of quantum information. The determination whether a given state is entangled or not is one of the most challenging open problems of the field. Here we report on the experimental demonstration of measurement-device-independent (MDI) entanglement detection using witness method for general two qubits photon polarization systems. In the MDI settings, there is no requirement to assume perfect implementations or neither to trust the measurement devices. This experimental demonstration can be generalized for the investigation of properties of quantum systems and for the realization of cryptography and communication protocols.

摘要

纠缠是量子理论最令人费解的特征之一，对量子信息新领域极为重要。确定一个给定状态是否纠缠是该领域最具挑战性的开放性问题之一。在此，我们报告了使用见证者方法对一般两量子比特光子偏振系统进行测量设备无关（MDI）纠缠检测的实验演示。在MDI设置中，无需假设完美实现，也无需信任测量设备。该实验演示可推广用于量子系统性质的研究以及密码学和通信协议的实现。