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arXiv 2102.08587quant-ph
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超导量子处理器中强热化和弱热化的观测

Observation of strong and weak thermalization in a superconducting quantum processor

Fusheng Chen, Zheng-Hang Sun, Ming Gong, Qingling Zhu, Yu-Ran Zhang, Yulin Wu, Yangsen Ye, Chen Zha, Shaowei Li, Shaojun Guo, Haoran Qian, He-Liang Huang, Jiale… 展开作者

Fusheng Chen, Zheng-Hang Sun, Ming Gong, Qingling Zhu, Yu-Ran Zhang, Yulin Wu, Yangsen Ye, Chen Zha, Shaowei Li, Shaojun Guo, Haoran Qian, He-Liang Huang, Jiale Yu, Hui Deng, Hao Rong, Jin Lin, Yu Xu, Lihua Sun, Cheng Guo, Na Li, Futian Liang, Cheng-Zhi Peng, Heng Fan, Xiaobo Zhu, Jian-Wei Pan

摘要:

我们实验研究了一维12个超导量子比特阵列在横场作用下的遍历动力学,并确定了不同初态下的强热化和弱热化区域。我们观察到收敛的局部观测到其热期望值在强thermalizaion制度。对于弱热化,局部可观测动力学在热化值附近存在振荡,这只能通过时间平均来实现。我们还证明了纠缠熵和纠缠度可以表征强热化和弱热化的机制。我们的工作为量子系统中热化的一般理解迈出了重要的一步。

英文摘要:

We experimentally study the ergodic dynamics of a 1D array of 12 superconducting qubits with a transverse field, and identify the regimes of strong and weak thermalization with different initial states. We observe convergence of the local observable to its thermal expectation value in the strong-thermalizaion regime. For weak thermalization, the dynamics of local observable exhibits an oscillation around the thermal value, which can only be attained by the time average. We also demonstrate that the entanglement entropy and concurrence can characterize the regimes of strong and weak thermalization. Our work provides an essential step towards a generic understanding of thermalization in quantum systems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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