Frequency pushing enhanced by an exceptional point in an atom–cavity coupled system
Abstract We observed the frequency pushing of the cavity resonance as a result of the coupling of the cavity field with the ground state 138Ba in a high-Q cavity. A weak probe laser propagated along the axis of a Fabry–Pérot cavity while ground-state barium atoms traversed the cavity mode perpendicu...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2024-02-01
|
| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-024-54008-w |
| _version_ | 1797275003795800064 |
|---|---|
| author | Joohye Lee Jinuk Kim Kyungwon An |
| author_facet | Joohye Lee Jinuk Kim Kyungwon An |
| author_sort | Joohye Lee |
| collection | DOAJ |
| description | Abstract We observed the frequency pushing of the cavity resonance as a result of the coupling of the cavity field with the ground state 138Ba in a high-Q cavity. A weak probe laser propagated along the axis of a Fabry–Pérot cavity while ground-state barium atoms traversed the cavity mode perpendicularly. By operating the atom–cavity composite in the vicinity of an exceptional point, we could observe a greatly enhanced frequency shift of the cavity transmission peak, which was pushed away from the atomic resonance, resulting in up to 41 ± 7 kHz frequency shift per atom from the empty cavity resonance. We analyzed our results by using the Maxwell–Schrödinger equation and obtained good agreement with the measurements. |
| first_indexed | 2024-03-07T15:08:08Z |
| format | Article |
| id | doaj.art-58a1c13969df464085517e82c14c1e5b |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-07T15:08:08Z |
| publishDate | 2024-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-58a1c13969df464085517e82c14c1e5b2024-03-05T18:49:40ZengNature PortfolioScientific Reports2045-23222024-02-0114111010.1038/s41598-024-54008-wFrequency pushing enhanced by an exceptional point in an atom–cavity coupled systemJoohye Lee0Jinuk Kim1Kyungwon An2Department of Physics and Astronomy and Institute of Applied Physics, Seoul National UniversityDepartment of Physics and Astronomy and Institute of Applied Physics, Seoul National UniversityDepartment of Physics and Astronomy and Institute of Applied Physics, Seoul National UniversityAbstract We observed the frequency pushing of the cavity resonance as a result of the coupling of the cavity field with the ground state 138Ba in a high-Q cavity. A weak probe laser propagated along the axis of a Fabry–Pérot cavity while ground-state barium atoms traversed the cavity mode perpendicularly. By operating the atom–cavity composite in the vicinity of an exceptional point, we could observe a greatly enhanced frequency shift of the cavity transmission peak, which was pushed away from the atomic resonance, resulting in up to 41 ± 7 kHz frequency shift per atom from the empty cavity resonance. We analyzed our results by using the Maxwell–Schrödinger equation and obtained good agreement with the measurements.https://doi.org/10.1038/s41598-024-54008-w |
| spellingShingle | Joohye Lee Jinuk Kim Kyungwon An Frequency pushing enhanced by an exceptional point in an atom–cavity coupled system Scientific Reports |
| title | Frequency pushing enhanced by an exceptional point in an atom–cavity coupled system |
| title_full | Frequency pushing enhanced by an exceptional point in an atom–cavity coupled system |
| title_fullStr | Frequency pushing enhanced by an exceptional point in an atom–cavity coupled system |
| title_full_unstemmed | Frequency pushing enhanced by an exceptional point in an atom–cavity coupled system |
| title_short | Frequency pushing enhanced by an exceptional point in an atom–cavity coupled system |
| title_sort | frequency pushing enhanced by an exceptional point in an atom cavity coupled system |
| url | https://doi.org/10.1038/s41598-024-54008-w |
| work_keys_str_mv | AT joohyelee frequencypushingenhancedbyanexceptionalpointinanatomcavitycoupledsystem AT jinukkim frequencypushingenhancedbyanexceptionalpointinanatomcavitycoupledsystem AT kyungwonan frequencypushingenhancedbyanexceptionalpointinanatomcavitycoupledsystem |