Title | Experimental Realization of a Quantum Refrigerator Driven by Indefinite Causal Orders |
Author | |
Corresponding Author | Dong,Ying; Xin,Tao; Lu,Dawei |
Joint first author | Nie,Xinfang; Zhu,Xuanran |
Publication Years | 2022-09-02
|
DOI | |
Source Title | |
ISSN | 0031-9007
|
EISSN | 1079-7114
|
Volume | 129Issue:10 |
Abstract | Indefinite causal order (ICO) is playing a key role in recent quantum technologies. Here, we experimentally study quantum thermodynamics driven by ICO on nuclear spins using the nuclear magnetic resonance system. We realize the ICO of two thermalizing channels to exhibit how the mechanism works, and show that the working substance can be cooled or heated albeit it undergoes thermal contacts with reservoirs of the same temperature. Moreover, we construct a single cycle of the ICO refrigerator based on the Maxwell's demon mechanism, and evaluate its performance by measuring the work consumption and the heat energy extracted from the low-temperature reservoir. Unlike classical refrigerators in which the coefficient of performance (COP) is perversely higher the closer the temperature of the high-temperature and low-temperature reservoirs are to each other, the ICO refrigerator's COP is always bounded to small values due to the nonunit success probability in projecting the ancillary qubit to the preferable subspace. To enhance the COP, we propose and experimentally demonstrate a general framework based on the density matrix exponentiation (DME) approach, as an extension to the ICO refrigeration. The COP is observed to be enhanced by more than 3 times with the DME approach. Our Letter demonstrates a new way for nonclassical heat exchange, and paves the way towards construction of quantum refrigerators on a quantum system. |
URL | [Source Record] |
Indexed By | |
Language | English
|
Important Publications | NI Journal Papers
|
SUSTech Authorship | First
; 共同第一
; Corresponding
|
Funding Project | National Key Research and Development Program of China[2019YFA0308100]
; National Natural Science Foundation of China[
|
WOS Research Area | Physics
|
WOS Subject | Physics, Multidisciplinary
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WOS Accession No | WOS:000933695700002
|
Publisher | |
ESI Research Field | PHYSICS
|
Data Source | Web of Science
|
Citation statistics |
Cited Times [WOS]:12
|
Document Type | Journal Article |
Identifier | http://kc.sustech.edu.cn/handle/2SGJ60CL/402706 |
Department | Department of Physics 量子科学与工程研究院 |
Affiliation | 1.Shenzhen Institute for Quantum Science and Engineering,Department of Physics,Southern University of Science and Technology,Shenzhen,518055,China 2.Guangdong Provincial Key Laboratory of Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China 3.Research Center for Quantum Sensing,Zhejiang Lab,Hangzhou,Zhejiang,311121,China |
First Author Affilication | Department of Physics; Institute for Quantum Science and Engineering |
Corresponding Author Affilication | Department of Physics; Institute for Quantum Science and Engineering |
First Author's First Affilication | Department of Physics; Institute for Quantum Science and Engineering |
Recommended Citation GB/T 7714 |
Nie,Xinfang,Zhu,Xuanran,Huang,Keyi,et al. Experimental Realization of a Quantum Refrigerator Driven by Indefinite Causal Orders[J]. PHYSICAL REVIEW LETTERS,2022,129(10).
|
APA |
Nie,Xinfang.,Zhu,Xuanran.,Huang,Keyi.,Tang,Kai.,Long,Xinyue.,...&Lu,Dawei.(2022).Experimental Realization of a Quantum Refrigerator Driven by Indefinite Causal Orders.PHYSICAL REVIEW LETTERS,129(10).
|
MLA |
Nie,Xinfang,et al."Experimental Realization of a Quantum Refrigerator Driven by Indefinite Causal Orders".PHYSICAL REVIEW LETTERS 129.10(2022).
|
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