Experimental Realization of Shortcuts to Adiabaticity in a Nonintegrable Spin Chain by Local Counterdiabatic Driving

Zhou, Hui1,2; Ji, Yunlan3,4,5; Nie, Xinfang6,7; Yang, Xiaodong3,4,5; Chen, Xi3,4,5; Bian, Ji3,4,5; Peng, Xinhua3,4,5,8

2020-04-23

10.1103/PhysRevApplied.13.044059

Physical Review Applied   影响因子和分区

2331-7019

Counterdiabatic driving (CD) offers a fast and robust strategy to manipulate and prepare the quantum state in multibody systems. However, the exact CD term involving the spectral properties of the system is difficult to calculate and generally takes a complicated form for higher-dimensional complex systems. Recently, Sels and Polkovnikov [Proc. Natl. Acad. Sci. U. S. A. 114, E3909 (2017)] proposed a variational method to optimally approximate the CD term with no need for the full spectral information of the original Hamiltonian. Using a nuclear-magnetic-resonance setup, here we report an experimental demonstration of this method to construct available shortcuts to adiabaticity in a nonintegrable spin-1/2 chain via only local controls. In this process, the ground state of such a system is rapidly prepared and the final state fidelity is significantly increased compared with the traditional adiabatic method. Our experiments prove the feasibility of this variational method to design CD in practice, and thus it is a promising strategy for fast, high-fidelity quantum-state manipulation in complex and noisy quantum systems.

SCI ; EI

英语

其他

Anhui Initiative in Quantum Information Technologies[AHY050000]

Physics

Physics, Applied

WOS:000527891600002

AMER PHYSICAL SOC

20202108702092

Quantum optics ; Ordinary differential equations

Light/Optics:741.1 ; Calculus:921.2 ; Quantum Theory; Quantum Mechanics:931.4

Web of Science

1.Shaanxi Univ Sci & Technol, Dept Phys, Xian 710021, Shaanxi, Peoples R China
2.Shaanxi Univ Sci & Technol, Inst Theoret Phys, Xian 710021, Shaanxi, Peoples R China
3.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China
4.Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China
5.Univ Sci & Technol China, CAS Key Lab Microscale Magnet Resonance, Hefei 230026, Anhui, Peoples R China
6.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Guangdong, Peoples R China
7.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
8.Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Anhui, Peoples R China

Zhou, Hui,Ji, Yunlan,Nie, Xinfang,et al. Experimental Realization of Shortcuts to Adiabaticity in a Nonintegrable Spin Chain by Local Counterdiabatic Driving[J]. Physical Review Applied,2020,13(4).

Zhou, Hui.,Ji, Yunlan.,Nie, Xinfang.,Yang, Xiaodong.,Chen, Xi.,...&Peng, Xinhua.(2020).Experimental Realization of Shortcuts to Adiabaticity in a Nonintegrable Spin Chain by Local Counterdiabatic Driving.Physical Review Applied,13(4).

Zhou, Hui,et al."Experimental Realization of Shortcuts to Adiabaticity in a Nonintegrable Spin Chain by Local Counterdiabatic Driving".Physical Review Applied 13.4(2020).