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Dual-band unidirectional reflectionlessness in non-Hermitian quantum system consisting of a gain and a loss plasmonic cavities

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Abstract

Dual-band unidirectional reflectionlessness is investigated in a non-Hermitian quantum system that consists of two plasmonic cavities coupled to a one-dimensional plasmonic waveguide. By appropriately adjusting the phase shift and decay rate of two plasmonic cavities, dual-band unidirectional reflectionlessness is obtained at exceptional points. Moreover, the dual-band unidirectional reflectionlessness can be manipulated in the wide ranges of phase shift and decay rate. In addition, high non-reciprocal entanglement between two plasmonic cavities can be obtained under appropriate phase shift and decay rate of two plasmonic cavities.

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Acknowledgements

This work is supported by the National Natural Science Foundation of China (Grant Nos. 11364044, 11864043), the Science and Technology Research Project of the Education Department of Jilin Province (Grant No. JJKH20170455KJ) and the Science and Technology Development Foundation of Jilin Province (Grant No. 20180101342JC).

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  1. Department of Physics, College of Science, Yanbian University, Yanji, 133002, Jilin, People’s Republic of China

    De-Xiu Qiu, Xin-Yu Zou, Yingming Liu, Hang Yang, Lingxue Yu, Ying-Qiao Zhang, Xing-Ri Jin, Chengshou An & Shou Zhang

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  2. Xin-Yu Zou
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Qiu, DX., Zou, XY., Liu, Y. et al. Dual-band unidirectional reflectionlessness in non-Hermitian quantum system consisting of a gain and a loss plasmonic cavities. Quantum Inf Process 18, 269 (2019). https://doi.org/10.1007/s11128-019-2380-9

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