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Single-photon scattering and quantum entanglement of two giant atoms with azimuthal angle differences in a waveguide system |
| Jin-Song Huang(黄劲松)1,†, Hong-Wu Huang(黄红武)1, Yan-Ling Li(李艳玲)1, and Zhong-Hui Xu(徐中辉)2 |
1 School of Information Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China;
2 Faculty of Science, Jiangxi University of Science and Technology, Ganzhou 341000, China |
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Abstract We theoretically investigate coherent scattering of single photons and quantum entanglement of two giant atoms with azimuthal angle differences in a waveguide system. Using the real-space Hamiltonian, analytical expressions are derived for the transport spectra scattered by these two giant atoms with four azimuthal angles. Fano-like resonance can be exhibited in the scattering spectra by adjusting the azimuthal angle difference. High concurrence of the entangled state for two atoms can be implemented in a wide angle-difference range, and the entanglement of the atomic states can be switched on/off by modulating the additional azimuthal angle differences from the giant atoms. This suggests a novel handle to effectively control the single-photon scattering and quantum entanglement.
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Received: 20 December 2023
Revised: 30 January 2024
Accepted manuscript online: 02 February 2024
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PACS:
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05.45.Pq
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(Numerical simulations of chaotic systems)
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89.20.Hh
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(World Wide Web, Internet)
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06.30.Ft
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(Time and frequency)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 12365003, 12364024, and 11864014) and the Jiangxi Provincial Natural Science Foundation (Grant Nos. 20212BAB201014 and 20224BAB201023). |
Corresponding Authors:
Jin-Song Huang,E-mail:jshuangjs@126.com
E-mail: jshuangjs@126.com
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Cite this article:
Jin-Song Huang(黄劲松), Hong-Wu Huang(黄红武), Yan-Ling Li(李艳玲), and Zhong-Hui Xu(徐中辉) Single-photon scattering and quantum entanglement of two giant atoms with azimuthal angle differences in a waveguide system 2024 Chin. Phys. B 33 050506
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