Bound states and atomic interaction in giant atom waveguide QED with dispersive coupling
In this paper, we investigate the bound states and the effective interaction between a pair of giant atoms, which couples to the coupled resonator waveguide in a nested configuration. To suppress the harmful individual and collective dissipations to the waveguide, we consider the dispersive coupling...
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| Language: | English |
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Elsevier
2025-02-01
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| Series: | Results in Physics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S221137972500018X |
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| author | Mingzhu Weng Zhihai Wang |
| author_facet | Mingzhu Weng Zhihai Wang |
| author_sort | Mingzhu Weng |
| collection | DOAJ |
| description | In this paper, we investigate the bound states and the effective interaction between a pair of giant atoms, which couples to the coupled resonator waveguide in a nested configuration. To suppress the harmful individual and collective dissipations to the waveguide, we consider the dispersive coupling scheme, where the frequency of the giant atoms are far away from the propagating band of the waveguide. In our scheme, the atomic interaction can be induced by the overlap between the bound states in the gap. We demonstrate the relative position dependent atomic coupling and explore its application in the state transfer. We find that the transfer fidelity of a superposition state can approach 0.999. Therefore, our scheme is useful for designing robust quantum information processing. |
| format | Article |
| id | doaj-art-edbfd05a70e647cfb6501203cddb1f78 |
| institution | Kabale University |
| issn | 2211-3797 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj-art-edbfd05a70e647cfb6501203cddb1f782025-02-03T04:16:40ZengElsevierResults in Physics2211-37972025-02-0169108124Bound states and atomic interaction in giant atom waveguide QED with dispersive couplingMingzhu Weng0Zhihai Wang1Center for Quantum Sciences and School of Physics, Northeast Normal University, Changchun 130024, ChinaCorresponding author.; Center for Quantum Sciences and School of Physics, Northeast Normal University, Changchun 130024, ChinaIn this paper, we investigate the bound states and the effective interaction between a pair of giant atoms, which couples to the coupled resonator waveguide in a nested configuration. To suppress the harmful individual and collective dissipations to the waveguide, we consider the dispersive coupling scheme, where the frequency of the giant atoms are far away from the propagating band of the waveguide. In our scheme, the atomic interaction can be induced by the overlap between the bound states in the gap. We demonstrate the relative position dependent atomic coupling and explore its application in the state transfer. We find that the transfer fidelity of a superposition state can approach 0.999. Therefore, our scheme is useful for designing robust quantum information processing.http://www.sciencedirect.com/science/article/pii/S221137972500018XGiant atomBound statesState transfer |
| spellingShingle | Mingzhu Weng Zhihai Wang Bound states and atomic interaction in giant atom waveguide QED with dispersive coupling Results in Physics Giant atom Bound states State transfer |
| title | Bound states and atomic interaction in giant atom waveguide QED with dispersive coupling |
| title_full | Bound states and atomic interaction in giant atom waveguide QED with dispersive coupling |
| title_fullStr | Bound states and atomic interaction in giant atom waveguide QED with dispersive coupling |
| title_full_unstemmed | Bound states and atomic interaction in giant atom waveguide QED with dispersive coupling |
| title_short | Bound states and atomic interaction in giant atom waveguide QED with dispersive coupling |
| title_sort | bound states and atomic interaction in giant atom waveguide qed with dispersive coupling |
| topic | Giant atom Bound states State transfer |
| url | http://www.sciencedirect.com/science/article/pii/S221137972500018X |
| work_keys_str_mv | AT mingzhuweng boundstatesandatomicinteractioningiantatomwaveguideqedwithdispersivecoupling AT zhihaiwang boundstatesandatomicinteractioningiantatomwaveguideqedwithdispersivecoupling |