首页|Robust beam splitter with fast quantum state transfer through a topological interface

Robust beam splitter with fast quantum state transfer through a topological interface

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The Su-Schrieffer-Heeger(SSH)model,commonly used for robust state transfers through topologically protected edge pumping,has been general-ized and exploited to engineer diverse functional quantum devices.Here,we propose to realize a fast topological beam splitter based on a generalized SSH model by accelerating the quantum state transfer(QST)process essentially limited by adiabatic requirements.The scheme involves delicate orchestration of the instantaneous energy spectrum through exponential modulation of nearest neighbor coupling strengths and onsite energies,yielding a significantly accelerated beam splitting process.Due to properties of topological pumping and accelerated QST,the beam splitter exhibits strong robustness against parameter disorders and losses of system.In addition,the model demonstrates good scalability and can be extended to two-dimensional crossed-chain structures to realize a topological router with variable numbers of output ports.Our work provides practical prospects for fast and robust topological QST in feasible quantum devices in large-scale quantum information processing.

quantum state transferbeam splittertopological router

Jia-Ning Zhang、Jin-Xuan Han、Jin-Lei Wu、Jie Song、Yong-Yuan Jiang

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Department of Optoelectronics Science,Harbin Institute of Technology,Weihai 264209,China

School of Physics,Harbin Institute of Technology,Harbin 150001,China

School of Physics and Microelectronics,Zhengzhou University,Zhengzhou 450001,China

Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China

Key Laboratory of Micro-Nano Optoelectronic Information System,Ministry of Industry and Information Technology,Harbin 150001,China

Key Laboratory of Micro-Optics and Photonic Technology of Heilongjiang Province,Harbin Institute of Technology,Harbin 150001,China

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National Natural Science Foundation of ChinaNatural Science Foundation of Shandong Province of China

62075048ZR2020MF129

2023

10.1007/s11467-023-1289-z

物理学前沿
高等教育出版社

物理学前沿

CSTPCDCSCD
影响因子：0.816
ISSN：2095-0462
年,卷(期)：2023.18(5)
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