Quantum synchronization of a single trapped-ion qubit

Zhang, Liyun1,2,3; Wang, Zhao1,2,3; Wang, Yucheng1,2,3; Zhang, Junhua1,2,3; Wu, Zhigang1,2,3; Jie, Jianwen1,2,3,4,5; Lu, Yao1,2,3

2023-09-25

10.1103/PhysRevResearch.5.033209

PHYSICAL REVIEW RESEARCH   Impact Factor & Quartile

2643-1564

Synchronizing a few-level quantum system is of fundamental importance to the understanding of synchronization in the deep quantum regime. Whether a two-level system, the smallest quantum system, can be synchronized has been theoretically debated for the past several years. Here, for the first time, we demonstrate that a qubit can indeed be synchronized to an external driving signal by using a trapped-ion system. By engineering fully controllable gain and damping processes, an ion qubit is locked to the driving signal and oscillates in phase. Moreover, upon tuning the parameters of the driving signal, we observe characteristic features of the Arnold tongue as well. Our measurements agree remarkably well with numerical simulations based on recent theory on qubit synchronization. By synchronizing the basic unit of quantum information, our study opens up the possibility of exploring the application of quantum synchronization to quantum information processing in the near future.

ESCI

English

First ; Corresponding

National Science Foundation of China[12104205] ; Shenzhen Science and Technology Program[KQTD20200820113010023] ; Guangdong Basic and Applied Basic Research Foundation[2020A1515010864] ; China Postdoctoral Science Foundation[2022M711496] ; Guangdong Provincial Key Laboratory[2019B121203002] ; National Natural Science Foundation of China[11904423]

Physics

Physics, Multidisciplinary

WOS:001089423900006

AMER PHYSICAL SOC

Web of Science

1.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn SIQSE, Shenzhen 518055, Peoples R China
2.Int Quantum Acad, Shenzhen 518048, Peoples R China
3.Southern Univ Sci & Technol, Guangdong Prov Key Lab Quantum Sci & Engn, Shenzhen 518055, Peoples R China
4.Shenzhen Technol Univ, Ctr Adv Mat Diagnost Technol, Shenzhen Key Lab Ultraintense Laser & Adv Mat Tech, Shenzhen 518118, Peoples R China
5.Shenzhen Technol Univ, Coll Engn Phys, Shenzhen 518118, Peoples R China

Zhang, Liyun,Wang, Zhao,Wang, Yucheng,et al. Quantum synchronization of a single trapped-ion qubit[J]. PHYSICAL REVIEW RESEARCH,2023,5(3).

Zhang, Liyun.,Wang, Zhao.,Wang, Yucheng.,Zhang, Junhua.,Wu, Zhigang.,...&Lu, Yao.(2023).Quantum synchronization of a single trapped-ion qubit.PHYSICAL REVIEW RESEARCH,5(3).

Zhang, Liyun,et al."Quantum synchronization of a single trapped-ion qubit".PHYSICAL REVIEW RESEARCH 5.3(2023).