Suppression of local decay rate through energy quantum confinement effect in non-Markovian waveguide QED
Abstract Waveguide quantum electrodynamics (QED) system manifests an ideal platform for studying many-body physics. When multiple emitters are coupled to a common waveguide, subradiant states may arise because of the waveguide-mediated interaction, leading to a long lifetime because of their immunit...
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SpringerOpen
2025-03-01
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| Series: | PhotoniX |
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| Online Access: | https://doi.org/10.1186/s43074-025-00167-6 |
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| author | Yuan Liu Hong-Bo Sun Linhan Lin |
| author_facet | Yuan Liu Hong-Bo Sun Linhan Lin |
| author_sort | Yuan Liu |
| collection | DOAJ |
| description | Abstract Waveguide quantum electrodynamics (QED) system manifests an ideal platform for studying many-body physics. When multiple emitters are coupled to a common waveguide, subradiant states may arise because of the waveguide-mediated interaction, leading to a long lifetime because of their immunity to the waveguide mode-induced dissipation. However, they can still be influenced by local environments, which are incoherent for different emitters and cannot be canceled out through interference. Herein, a new mechanism termed energy quantum confinement effect (EQCE) is proposed in a non-Markovian waveguide QED system to suppress the local dissipation. The energy quantum is confined in the waveguide by emitters, suppressing spontaneous decay of the emitters. The EQCE makes the system partly free from local dissipation of emitters, leading to a total decay rate lower than the local decay rate. We further show that similar effect occurs spontaneously by self-interference and can be stressed by cooperative coupling, relaxing the requirement for initializing the emitters into a remotely entangled state. |
| format | Article |
| id | doaj-art-ce8dfe2c92644cd99b2ecf9a9c08fc31 |
| institution | DOAJ |
| issn | 2662-1991 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | PhotoniX |
| spelling | doaj-art-ce8dfe2c92644cd99b2ecf9a9c08fc312025-08-20T03:04:53ZengSpringerOpenPhotoniX2662-19912025-03-016111310.1186/s43074-025-00167-6Suppression of local decay rate through energy quantum confinement effect in non-Markovian waveguide QEDYuan Liu0Hong-Bo Sun1Linhan Lin2State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua UniversityState Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua UniversityState Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua UniversityAbstract Waveguide quantum electrodynamics (QED) system manifests an ideal platform for studying many-body physics. When multiple emitters are coupled to a common waveguide, subradiant states may arise because of the waveguide-mediated interaction, leading to a long lifetime because of their immunity to the waveguide mode-induced dissipation. However, they can still be influenced by local environments, which are incoherent for different emitters and cannot be canceled out through interference. Herein, a new mechanism termed energy quantum confinement effect (EQCE) is proposed in a non-Markovian waveguide QED system to suppress the local dissipation. The energy quantum is confined in the waveguide by emitters, suppressing spontaneous decay of the emitters. The EQCE makes the system partly free from local dissipation of emitters, leading to a total decay rate lower than the local decay rate. We further show that similar effect occurs spontaneously by self-interference and can be stressed by cooperative coupling, relaxing the requirement for initializing the emitters into a remotely entangled state.https://doi.org/10.1186/s43074-025-00167-6Waveguide QEDSubradiant stateNon-Markovian quantum process |
| spellingShingle | Yuan Liu Hong-Bo Sun Linhan Lin Suppression of local decay rate through energy quantum confinement effect in non-Markovian waveguide QED PhotoniX Waveguide QED Subradiant state Non-Markovian quantum process |
| title | Suppression of local decay rate through energy quantum confinement effect in non-Markovian waveguide QED |
| title_full | Suppression of local decay rate through energy quantum confinement effect in non-Markovian waveguide QED |
| title_fullStr | Suppression of local decay rate through energy quantum confinement effect in non-Markovian waveguide QED |
| title_full_unstemmed | Suppression of local decay rate through energy quantum confinement effect in non-Markovian waveguide QED |
| title_short | Suppression of local decay rate through energy quantum confinement effect in non-Markovian waveguide QED |
| title_sort | suppression of local decay rate through energy quantum confinement effect in non markovian waveguide qed |
| topic | Waveguide QED Subradiant state Non-Markovian quantum process |
| url | https://doi.org/10.1186/s43074-025-00167-6 |
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