Cavity Optomechanical Quantum Memory for Twisted Photons Using a Ring BEC
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arXiv
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| Autori principali: | , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866909992825651200 |
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| author | Daloi, Nilamoni Gupta, Rahul Ghosh, Aritra Kumar, Pardeep Dhar, Himadri Shekhar Bhattacharya, M. |
| author_facet | Daloi, Nilamoni Gupta, Rahul Ghosh, Aritra Kumar, Pardeep Dhar, Himadri Shekhar Bhattacharya, M. |
| contents | We theoretically propose a photonic orbital angular momentum (OAM) quantum memory platform based on an atomic Bose-Einstein condensate confined in a ring trap and placed inside a Fabry-Perot cavity driven by Laguerre-Gaussian beams. In contrast to electromagnetically induced transparency-based protocols, our memory does not require change of internal atomic levels. The optical states are instead stored in the large Hilbert space of topologically protected and long-lived motional states (persistent currents) of the condensate, yielding a storage time three orders of magnitude better than presently available. Further, the use of a cavity provides orders of magnitude more resonances, and hence bandwidth, for reading and writing than internal atomic transitions. Finally, the analogy to cavity optomechanics suggests a natural path to wavelength conversion, OAM transduction, and nondestructive readout of the memory. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_06651 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Cavity Optomechanical Quantum Memory for Twisted Photons Using a Ring BEC Daloi, Nilamoni Gupta, Rahul Ghosh, Aritra Kumar, Pardeep Dhar, Himadri Shekhar Bhattacharya, M. Quantum Physics Quantum Gases Optics We theoretically propose a photonic orbital angular momentum (OAM) quantum memory platform based on an atomic Bose-Einstein condensate confined in a ring trap and placed inside a Fabry-Perot cavity driven by Laguerre-Gaussian beams. In contrast to electromagnetically induced transparency-based protocols, our memory does not require change of internal atomic levels. The optical states are instead stored in the large Hilbert space of topologically protected and long-lived motional states (persistent currents) of the condensate, yielding a storage time three orders of magnitude better than presently available. Further, the use of a cavity provides orders of magnitude more resonances, and hence bandwidth, for reading and writing than internal atomic transitions. Finally, the analogy to cavity optomechanics suggests a natural path to wavelength conversion, OAM transduction, and nondestructive readout of the memory. |
| title | Cavity Optomechanical Quantum Memory for Twisted Photons Using a Ring BEC |
| topic | Quantum Physics Quantum Gases Optics |
| url | https://arxiv.org/abs/2506.06651 |