Experimental cyclic interconversion between coherence and quantum correlations

Quantum resource theories seek to quantify sources of nonclassicality that bestow quantum technologies their operational advantage. Chief among these are studies of quantum correlations and quantum coherence. The former isolates nonclassicality in the correlations between systems, and the latter cap...

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Main Authors: Wu, Kang-Da, Hou, Zhibo, Zhao, Yuan-Yuan, Xiang, Guo-Yong, Li, Chuan-Feng, Guo, Guang-Can, Ma, Jiajun, He, Qiong-Yi, Thompson, Jayne, Gu, Mile
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2018
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Online Access:https://hdl.handle.net/10356/89092
http://hdl.handle.net/10220/46107
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-890922023-02-28T19:35:07Z Experimental cyclic interconversion between coherence and quantum correlations Wu, Kang-Da Hou, Zhibo Zhao, Yuan-Yuan Xiang, Guo-Yong Li, Chuan-Feng Guo, Guang-Can Ma, Jiajun He, Qiong-Yi Thompson, Jayne Gu, Mile School of Physical and Mathematical Sciences Complexity Institute Optical Tests Of Quantum Theory Quantum Correlations In Quantum Information DRNTU::Science::Physics Quantum resource theories seek to quantify sources of nonclassicality that bestow quantum technologies their operational advantage. Chief among these are studies of quantum correlations and quantum coherence. The former isolates nonclassicality in the correlations between systems, and the latter captures nonclassicality of quantum superpositions within a single physical system. Here, we present a scheme that cyclically interconverts between these resources without loss. The first stage converts coherence present in an input system into correlations with an ancilla. The second stage harnesses these correlations to restore coherence on the input system by measurement of the ancilla. We experimentally demonstrate this interconversion process using linear optics. Our experiment highlights the connection between nonclassicality of correlations and nonclassicality within local quantum systems and provides potential flexibilities in exploiting one resource to perform tasks normally associated with the other. NRF (Natl Research Foundation, S’pore) MOE (Min. of Education, S’pore) Published version 2018-09-26T07:11:25Z 2019-12-06T17:17:42Z 2018-09-26T07:11:25Z 2019-12-06T17:17:42Z 2018 Journal Article Wu, K.-D., Hou, Z., Zhao, Y.-Y., Xiang, G.-Y., Li, C.-F., Guo, G.-C., . . . Gu, M. (2018). Experimental Cyclic Interconversion between Coherence and Quantum Correlations. Physical Review Letters, 121(5), 050401-. doi:10.1103/PhysRevLett.121.050401 0031-9007 https://hdl.handle.net/10356/89092 http://hdl.handle.net/10220/46107 10.1103/PhysRevLett.121.050401 en Physical Review Letters © 2018 American Physical Society. This paper was published in Physical Review Letters and is made available as an electronic reprint (preprint) with permission of American Physical Society. The published version is available at: [http://dx.doi.org/10.1103/PhysRevLett.121.050401]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 6 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Optical Tests Of Quantum Theory
Quantum Correlations In Quantum Information
DRNTU::Science::Physics
spellingShingle Optical Tests Of Quantum Theory
Quantum Correlations In Quantum Information
DRNTU::Science::Physics
Wu, Kang-Da
Hou, Zhibo
Zhao, Yuan-Yuan
Xiang, Guo-Yong
Li, Chuan-Feng
Guo, Guang-Can
Ma, Jiajun
He, Qiong-Yi
Thompson, Jayne
Gu, Mile
Experimental cyclic interconversion between coherence and quantum correlations
description Quantum resource theories seek to quantify sources of nonclassicality that bestow quantum technologies their operational advantage. Chief among these are studies of quantum correlations and quantum coherence. The former isolates nonclassicality in the correlations between systems, and the latter captures nonclassicality of quantum superpositions within a single physical system. Here, we present a scheme that cyclically interconverts between these resources without loss. The first stage converts coherence present in an input system into correlations with an ancilla. The second stage harnesses these correlations to restore coherence on the input system by measurement of the ancilla. We experimentally demonstrate this interconversion process using linear optics. Our experiment highlights the connection between nonclassicality of correlations and nonclassicality within local quantum systems and provides potential flexibilities in exploiting one resource to perform tasks normally associated with the other.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Wu, Kang-Da
Hou, Zhibo
Zhao, Yuan-Yuan
Xiang, Guo-Yong
Li, Chuan-Feng
Guo, Guang-Can
Ma, Jiajun
He, Qiong-Yi
Thompson, Jayne
Gu, Mile
format Article
author Wu, Kang-Da
Hou, Zhibo
Zhao, Yuan-Yuan
Xiang, Guo-Yong
Li, Chuan-Feng
Guo, Guang-Can
Ma, Jiajun
He, Qiong-Yi
Thompson, Jayne
Gu, Mile
author_sort Wu, Kang-Da
title Experimental cyclic interconversion between coherence and quantum correlations
title_short Experimental cyclic interconversion between coherence and quantum correlations
title_full Experimental cyclic interconversion between coherence and quantum correlations
title_fullStr Experimental cyclic interconversion between coherence and quantum correlations
title_full_unstemmed Experimental cyclic interconversion between coherence and quantum correlations
title_sort experimental cyclic interconversion between coherence and quantum correlations
publishDate 2018
url https://hdl.handle.net/10356/89092
http://hdl.handle.net/10220/46107
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