Local detection of quantum correlations with a single trapped ion

被引：0

作者：

Gessner M. ^{[1
,2
]}

Ramm M. ^{[1
]}

Pruttivarasin T. ^{[1
]}

Buchleitner A. ^{[2
]}

Breuer H.-P. ^{[2
]}

Häffner H. ^{[1
]}

机构：

[1] Department of Physics, University of California, Berkeley

[2] Physikalisches Institut, Universität Freiburg, Freiburg D-79104

来源：

Gessner, M. (manuel.gessner@physik.uni-freiburg.de) | 1600年 / Nature Publishing Group卷 / 10期

基金：

美国国家科学基金会;

关键词：

Degrees of freedom (mechanics) - Ions - Quantum optics;

D O I：

10.1038/nphys2829

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Quantum correlations are at the heart of quantum information science. Their detection usually requires access to all the correlated subsystems. However, in many realistic scenarios this is not feasible, as only some of the subsystems can be controlled and measured. Such cases can be treated as open quantum systems interacting with an inaccessible environment. Initial system-environment correlations play a fundamental role for the dynamics of open quantum systems. Following a recent proposal, we exploit the impact of the correlations on the open-system dynamics to detect system-environment quantum correlations without accessing the environment. We use two degrees of freedom of a trapped ion to model an open system and its environment. The present method does not require any assumptions about the environment, the interaction or the initial state, and therefore provides a versatile tool for the study of quantum systems. © 2014 Macmillan Publishers Limited.

引用

页码：105 / 109

页数：4

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