Observation of quantum strong Mpemba effect
Abstract An ancient and counterintuitive phenomenon known as the Mpemba effect (water can cool faster when initially heated up) showcases the critical role of initial conditions in relaxation processes. How to realize and utilize this effect for speeding up relaxation is an important but challenging...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-01-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-54303-0 |
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| author | Jie Zhang Gang Xia Chun-Wang Wu Ting Chen Qian Zhang Yi Xie Wen-Bo Su Wei Wu Cheng-Wei Qiu Ping-Xing Chen Weibin Li Hui Jing Yan-Li Zhou |
| author_facet | Jie Zhang Gang Xia Chun-Wang Wu Ting Chen Qian Zhang Yi Xie Wen-Bo Su Wei Wu Cheng-Wei Qiu Ping-Xing Chen Weibin Li Hui Jing Yan-Li Zhou |
| author_sort | Jie Zhang |
| collection | DOAJ |
| description | Abstract An ancient and counterintuitive phenomenon known as the Mpemba effect (water can cool faster when initially heated up) showcases the critical role of initial conditions in relaxation processes. How to realize and utilize this effect for speeding up relaxation is an important but challenging task in purely quantum system till now. Here, we experimentally study the strong Mpemba effect in a single trapped ion system in which an exponentially accelerated relaxation in time is observed by preparing an optimal quantum initial state with no excitation of the slowest decaying mode. Also, we demonstrate that the condition of realizing such effect coincides with the Liouvillian exceptional point, featuring the coalescence of both the eigenvalues and the eigenmodes of the systems. Our work provides an efficient strategy to engineer the dynamics of open quantum system, and suggests a link unexplored yet between the Mpemba effect and the non-Hermitian physics. |
| format | Article |
| id | doaj-art-61df9b64e0bb43cfbdee2310ef26ef6d |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-61df9b64e0bb43cfbdee2310ef26ef6d2025-01-12T12:31:27ZengNature PortfolioNature Communications2041-17232025-01-011611710.1038/s41467-024-54303-0Observation of quantum strong Mpemba effectJie Zhang0Gang Xia1Chun-Wang Wu2Ting Chen3Qian Zhang4Yi Xie5Wen-Bo Su6Wei Wu7Cheng-Wei Qiu8Ping-Xing Chen9Weibin Li10Hui Jing11Yan-Li Zhou12Institute for Quantum Science and Technology, College of Science, National University of Defense TechnologyInstitute for Quantum Science and Technology, College of Science, National University of Defense TechnologyInstitute for Quantum Science and Technology, College of Science, National University of Defense TechnologyInstitute for Quantum Science and Technology, College of Science, National University of Defense TechnologyKey Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Hunan Normal UniversityInstitute for Quantum Science and Technology, College of Science, National University of Defense TechnologyInstitute for Quantum Science and Technology, College of Science, National University of Defense TechnologyInstitute for Quantum Science and Technology, College of Science, National University of Defense TechnologyDepartment of Electrical and Computer Engineering, National University of SingaporeInstitute for Quantum Science and Technology, College of Science, National University of Defense TechnologySchool of Physics and Astronomy, University of NottinghamKey Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Hunan Normal UniversityInstitute for Quantum Science and Technology, College of Science, National University of Defense TechnologyAbstract An ancient and counterintuitive phenomenon known as the Mpemba effect (water can cool faster when initially heated up) showcases the critical role of initial conditions in relaxation processes. How to realize and utilize this effect for speeding up relaxation is an important but challenging task in purely quantum system till now. Here, we experimentally study the strong Mpemba effect in a single trapped ion system in which an exponentially accelerated relaxation in time is observed by preparing an optimal quantum initial state with no excitation of the slowest decaying mode. Also, we demonstrate that the condition of realizing such effect coincides with the Liouvillian exceptional point, featuring the coalescence of both the eigenvalues and the eigenmodes of the systems. Our work provides an efficient strategy to engineer the dynamics of open quantum system, and suggests a link unexplored yet between the Mpemba effect and the non-Hermitian physics.https://doi.org/10.1038/s41467-024-54303-0 |
| spellingShingle | Jie Zhang Gang Xia Chun-Wang Wu Ting Chen Qian Zhang Yi Xie Wen-Bo Su Wei Wu Cheng-Wei Qiu Ping-Xing Chen Weibin Li Hui Jing Yan-Li Zhou Observation of quantum strong Mpemba effect Nature Communications |
| title | Observation of quantum strong Mpemba effect |
| title_full | Observation of quantum strong Mpemba effect |
| title_fullStr | Observation of quantum strong Mpemba effect |
| title_full_unstemmed | Observation of quantum strong Mpemba effect |
| title_short | Observation of quantum strong Mpemba effect |
| title_sort | observation of quantum strong mpemba effect |
| url | https://doi.org/10.1038/s41467-024-54303-0 |
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