Variational quantum simulation of many-body dissipative dynamics on a superconducting quantum processor
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arXiv
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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866914108927901696 |
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| author | Liu, Huan-Yu Sun, Tai-Ping Chen, Zhao-Yun Xue, Cheng Wang, Chao Zhuang, Xi-Ning Liu, Jin-Peng Yi, Wei Wu, Yu-Chun Guo, Guo-Ping |
| author_facet | Liu, Huan-Yu Sun, Tai-Ping Chen, Zhao-Yun Xue, Cheng Wang, Chao Zhuang, Xi-Ning Liu, Jin-Peng Yi, Wei Wu, Yu-Chun Guo, Guo-Ping |
| contents | Open quantum systems host a wide range of intriguing phenomena, yet their simulation on well-controlled quantum devices is challenging, owing to the exponential growth of the Hilbert space and the inherently non-unitary nature of the dynamics. Here we propose and experimentally demonstrate a variational quantum algorithm capable of scalable simulation of non-unitary many-body dissipative dynamics. The algorithm builds on the framework of linear combination of Hamiltonian simulation, which converts non-unitary dynamics into a weighted sum of unitary evolutions. With the further introduction of a simplified quantum circuit for loss-function evaluation, our scheme is suitable for near-term quantum hardware, with the circuit depth independent of the simulation time. We illustrate our scheme by simulating the collective dynamics of a dissipative transverse Ising model, as well as an interacting Hatano-Nelson model, on the superconducting quantum processor Wukong. Our work underlines the capability of noisy intermediate-scale quantum devices in simulating dissipative many-body dynamics and represents a step forward in exploiting their potential for solving outstanding physical problems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_20118 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Variational quantum simulation of many-body dissipative dynamics on a superconducting quantum processor Liu, Huan-Yu Sun, Tai-Ping Chen, Zhao-Yun Xue, Cheng Wang, Chao Zhuang, Xi-Ning Liu, Jin-Peng Yi, Wei Wu, Yu-Chun Guo, Guo-Ping Quantum Physics Open quantum systems host a wide range of intriguing phenomena, yet their simulation on well-controlled quantum devices is challenging, owing to the exponential growth of the Hilbert space and the inherently non-unitary nature of the dynamics. Here we propose and experimentally demonstrate a variational quantum algorithm capable of scalable simulation of non-unitary many-body dissipative dynamics. The algorithm builds on the framework of linear combination of Hamiltonian simulation, which converts non-unitary dynamics into a weighted sum of unitary evolutions. With the further introduction of a simplified quantum circuit for loss-function evaluation, our scheme is suitable for near-term quantum hardware, with the circuit depth independent of the simulation time. We illustrate our scheme by simulating the collective dynamics of a dissipative transverse Ising model, as well as an interacting Hatano-Nelson model, on the superconducting quantum processor Wukong. Our work underlines the capability of noisy intermediate-scale quantum devices in simulating dissipative many-body dynamics and represents a step forward in exploiting their potential for solving outstanding physical problems. |
| title | Variational quantum simulation of many-body dissipative dynamics on a superconducting quantum processor |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2510.20118 |