Multimode cold-damping optomechanics with delayed feedback
We investigate the role of time delay in cold-damping optomechanics with multiple mechanical resonances. For instantaneous electronic response, it was recently shown by C. Sommer and C. Genes [Phys. Rev. Lett. 123, 203605 (2019)PRLTAO0031-900710.1103/PhysRevLett.123.203605] that a single feedback lo...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2020-08-01
|
| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.033299 |
| _version_ | 1797211367518765056 |
|---|---|
| author | Christian Sommer Alekhya Ghosh Claudiu Genes |
| author_facet | Christian Sommer Alekhya Ghosh Claudiu Genes |
| author_sort | Christian Sommer |
| collection | DOAJ |
| description | We investigate the role of time delay in cold-damping optomechanics with multiple mechanical resonances. For instantaneous electronic response, it was recently shown by C. Sommer and C. Genes [Phys. Rev. Lett. 123, 203605 (2019)PRLTAO0031-900710.1103/PhysRevLett.123.203605] that a single feedback loop is sufficient to simultaneously remove thermal noise from many mechanical modes. While the intrinsic delayed response of the electronics can induce single-mode and mutual heating between adjacent modes, we propose to counteract such detrimental effects by introducing an additional time delay to the feedback loop. For lossy cavities and broadband feedback, we derive analytical results for the final occupancies of the mechanical modes within the formalism of quantum Langevin equations. For modes that are frequency degenerate collective effects dominate, mimicking behavior similar to Dicke super- and subradiance. These analytical results, corroborated with numerical simulations of both transient and steady state dynamics, allow us to find suitable conditions and strategies for efficient single-mode or multimode feedback optomechanics. |
| first_indexed | 2024-04-24T10:25:22Z |
| format | Article |
| id | doaj.art-e7f88d8d1b1c411b9f92192919ffc3c6 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:25:22Z |
| publishDate | 2020-08-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-e7f88d8d1b1c411b9f92192919ffc3c62024-04-12T16:59:28ZengAmerican Physical SocietyPhysical Review Research2643-15642020-08-012303329910.1103/PhysRevResearch.2.033299Multimode cold-damping optomechanics with delayed feedbackChristian SommerAlekhya GhoshClaudiu GenesWe investigate the role of time delay in cold-damping optomechanics with multiple mechanical resonances. For instantaneous electronic response, it was recently shown by C. Sommer and C. Genes [Phys. Rev. Lett. 123, 203605 (2019)PRLTAO0031-900710.1103/PhysRevLett.123.203605] that a single feedback loop is sufficient to simultaneously remove thermal noise from many mechanical modes. While the intrinsic delayed response of the electronics can induce single-mode and mutual heating between adjacent modes, we propose to counteract such detrimental effects by introducing an additional time delay to the feedback loop. For lossy cavities and broadband feedback, we derive analytical results for the final occupancies of the mechanical modes within the formalism of quantum Langevin equations. For modes that are frequency degenerate collective effects dominate, mimicking behavior similar to Dicke super- and subradiance. These analytical results, corroborated with numerical simulations of both transient and steady state dynamics, allow us to find suitable conditions and strategies for efficient single-mode or multimode feedback optomechanics.http://doi.org/10.1103/PhysRevResearch.2.033299 |
| spellingShingle | Christian Sommer Alekhya Ghosh Claudiu Genes Multimode cold-damping optomechanics with delayed feedback Physical Review Research |
| title | Multimode cold-damping optomechanics with delayed feedback |
| title_full | Multimode cold-damping optomechanics with delayed feedback |
| title_fullStr | Multimode cold-damping optomechanics with delayed feedback |
| title_full_unstemmed | Multimode cold-damping optomechanics with delayed feedback |
| title_short | Multimode cold-damping optomechanics with delayed feedback |
| title_sort | multimode cold damping optomechanics with delayed feedback |
| url | http://doi.org/10.1103/PhysRevResearch.2.033299 |
| work_keys_str_mv | AT christiansommer multimodecolddampingoptomechanicswithdelayedfeedback AT alekhyaghosh multimodecolddampingoptomechanicswithdelayedfeedback AT claudiugenes multimodecolddampingoptomechanicswithdelayedfeedback |