In-situ tuning of cavity dissipation and a topological transition in an atom-nanotip-cavity system
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arXiv
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| Autori principali: | , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866912419981295616 |
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| author | Ha, Taegyu Goudarzi, Kiyanoush Lee, Dowon Kim, Donggeon Jeong, Eunchul Kim, Uijin Kim, Myunghun Kim, Jinuk Lee, Moonjoo |
| author_facet | Ha, Taegyu Goudarzi, Kiyanoush Lee, Dowon Kim, Donggeon Jeong, Eunchul Kim, Uijin Kim, Myunghun Kim, Jinuk Lee, Moonjoo |
| contents | We theoretically investigate a method for tuning a dissipation rate in an atom-cavity system. By inserting a nanotip into the cavity mode, we estimate that the cavity dissipation rate increases by a factor of approximately 20, due to the scattering loss at the tip. As applications of our in-situ technique, we demonstrate that an exceptional line can be obtained when a single atom or ion is coupled to the resonator. Moreover, the position of an exceptional point is tuned by adjusting the decay rate, enabling a topological transition through dissipation control alone. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_07800 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | In-situ tuning of cavity dissipation and a topological transition in an atom-nanotip-cavity system Ha, Taegyu Goudarzi, Kiyanoush Lee, Dowon Kim, Donggeon Jeong, Eunchul Kim, Uijin Kim, Myunghun Kim, Jinuk Lee, Moonjoo Quantum Physics We theoretically investigate a method for tuning a dissipation rate in an atom-cavity system. By inserting a nanotip into the cavity mode, we estimate that the cavity dissipation rate increases by a factor of approximately 20, due to the scattering loss at the tip. As applications of our in-situ technique, we demonstrate that an exceptional line can be obtained when a single atom or ion is coupled to the resonator. Moreover, the position of an exceptional point is tuned by adjusting the decay rate, enabling a topological transition through dissipation control alone. |
| title | In-situ tuning of cavity dissipation and a topological transition in an atom-nanotip-cavity system |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2506.07800 |