Observation of multiple steady states with engineered dissipation
Abstract Simulating the dynamics of open quantum systems is essential in achieving practical quantum computation and understanding novel nonequilibrium behaviors. However, quantum simulation of a many-body system coupled to an engineered reservoir has yet to be fully explored in present-day experime...
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-01-01
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| Series: | npj Quantum Information |
| Online Access: | https://doi.org/10.1038/s41534-025-00958-6 |
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| _version_ | 1841544409301123072 |
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| author | Li Li Tong Liu Xue-Yi Guo He Zhang Silu Zhao Zheng-An Wang Zhongcheng Xiang Xiaohui Song Yu-Xiang Zhang Kai Xu Heng Fan Dongning Zheng |
| author_facet | Li Li Tong Liu Xue-Yi Guo He Zhang Silu Zhao Zheng-An Wang Zhongcheng Xiang Xiaohui Song Yu-Xiang Zhang Kai Xu Heng Fan Dongning Zheng |
| author_sort | Li Li |
| collection | DOAJ |
| description | Abstract Simulating the dynamics of open quantum systems is essential in achieving practical quantum computation and understanding novel nonequilibrium behaviors. However, quantum simulation of a many-body system coupled to an engineered reservoir has yet to be fully explored in present-day experiment platforms. In this work, we introduce engineered noise into a one-dimensional ten-qubit superconducting quantum processor to emulate a generic many-body open quantum system. Our approach originates from the stochastic unravellings of the master equation. By measuring the end-to-end correlation, we identify multiple steady states stemmed from a strong symmetry, which is established on the modified Hamiltonian via Floquet engineering. Furthermore, we investigate the structure of the steady-state manifold by preparing initial states as a superposition of states within different sectors on a five-qubit chain. Our work provides a manageable and hardware-efficient strategy for the open-system quantum simulation. |
| format | Article |
| id | doaj-art-0a85784696e842189820e7e127364020 |
| institution | Kabale University |
| issn | 2056-6387 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Quantum Information |
| spelling | doaj-art-0a85784696e842189820e7e1273640202025-01-12T12:34:09ZengNature Portfolionpj Quantum Information2056-63872025-01-011111710.1038/s41534-025-00958-6Observation of multiple steady states with engineered dissipationLi Li0Tong Liu1Xue-Yi Guo2He Zhang3Silu Zhao4Zheng-An Wang5Zhongcheng Xiang6Xiaohui Song7Yu-Xiang Zhang8Kai Xu9Heng Fan10Dongning Zheng11Institute of Physics, Chinese Academy of SciencesInstitute of Physics, Chinese Academy of SciencesInstitute of Physics, Chinese Academy of SciencesInstitute of Physics, Chinese Academy of SciencesInstitute of Physics, Chinese Academy of SciencesBeijing Academy of Quantum Information SciencesInstitute of Physics, Chinese Academy of SciencesInstitute of Physics, Chinese Academy of SciencesInstitute of Physics, Chinese Academy of SciencesInstitute of Physics, Chinese Academy of SciencesInstitute of Physics, Chinese Academy of SciencesInstitute of Physics, Chinese Academy of SciencesAbstract Simulating the dynamics of open quantum systems is essential in achieving practical quantum computation and understanding novel nonequilibrium behaviors. However, quantum simulation of a many-body system coupled to an engineered reservoir has yet to be fully explored in present-day experiment platforms. In this work, we introduce engineered noise into a one-dimensional ten-qubit superconducting quantum processor to emulate a generic many-body open quantum system. Our approach originates from the stochastic unravellings of the master equation. By measuring the end-to-end correlation, we identify multiple steady states stemmed from a strong symmetry, which is established on the modified Hamiltonian via Floquet engineering. Furthermore, we investigate the structure of the steady-state manifold by preparing initial states as a superposition of states within different sectors on a five-qubit chain. Our work provides a manageable and hardware-efficient strategy for the open-system quantum simulation.https://doi.org/10.1038/s41534-025-00958-6 |
| spellingShingle | Li Li Tong Liu Xue-Yi Guo He Zhang Silu Zhao Zheng-An Wang Zhongcheng Xiang Xiaohui Song Yu-Xiang Zhang Kai Xu Heng Fan Dongning Zheng Observation of multiple steady states with engineered dissipation npj Quantum Information |
| title | Observation of multiple steady states with engineered dissipation |
| title_full | Observation of multiple steady states with engineered dissipation |
| title_fullStr | Observation of multiple steady states with engineered dissipation |
| title_full_unstemmed | Observation of multiple steady states with engineered dissipation |
| title_short | Observation of multiple steady states with engineered dissipation |
| title_sort | observation of multiple steady states with engineered dissipation |
| url | https://doi.org/10.1038/s41534-025-00958-6 |
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