首页|Chiral bound states in a staggered array of coupled resonators

Chiral bound states in a staggered array of coupled resonators

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We study the chiral bound states in a coupled-resonator array with staggered hopping strengths,which interacts with a two-level small atom through a single coupling point or two adjacent ones.In addition to the two typical bound states found above and below the energy bands,this system presents an extraordinary chiral bound state located within the energy gap.We use the chirality to quantify the breaking of the mirror symmetry.We find that the chirality value undergoes continuous changes by tuning the coupling strengths.The preferred direction of the chirality is controlled not only by the competition between the intracell and the intercell hoppings in the coupled-resonator array,but also by the coherence between the two coupling points.In the case with one coupling point,the chirality values varies monotonously with difference between the intracell hopping and the intercell hoppings.While in the case with two coupling points,due to the coherence between the two coupling points the perfect chiral states can be obtained.

bound statestwo-level small atomcoupled-resonator arraychirality

金伍林、李静、卢竞、龚志瑞、周兰

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Synergetic Innovation Center for Quantum Effects and Applications,Key Laboratory for Matter Microstructure and Function of Hunan Province,Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of the Ministry of Education,Synergetic Innovation Center for Quantum Effects and Applications,Institute of Interdisciplinary Studies,Xiangjiang-Laboratory and Department of Physics,Hunan Normal University,Changsha 410081,China

College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen 518060,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaMajor Sci-Tech Program of Hunan Province,ChinaNatural Science Foundation of Guangdong Province,ChinaNatural Science Foundation of Guangdong Province,China

119750951207508211935006122471052023ZJ10102019A15150114002023A151501223

2024

10.1088/1674-1056/ad0bf0

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(2)
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