Squeezing light with optomechanical and spin-light quantum interfaces
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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866916996761780224 |
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| author | Schmid, Gian-Luca Aguilera, Manel Bosch Ngai, Chun Tat Ernzer, Maryse Filho, Luiz Couto Correa Pinto Høj, Dennis Andersen, Ulrik Lund Goschin, Florian Treutlein, Philipp |
| author_facet | Schmid, Gian-Luca Aguilera, Manel Bosch Ngai, Chun Tat Ernzer, Maryse Filho, Luiz Couto Correa Pinto Høj, Dennis Andersen, Ulrik Lund Goschin, Florian Treutlein, Philipp |
| contents | We investigate squeezing of light through quantum-noise-limited interactions with two different material systems: an ultracold atomic spin ensemble and a micromechanical membrane. Both systems feature a light-matter quantum interface that we exploit, respectively, to generate polarization squeezing of light through Faraday interaction with the collective atomic spin precession, and ponderomotive quadrature squeezing of light through radiation pressure interaction with the membrane vibrations in an optical cavity. Both experiments are described in a common theoretical framework, highlighting the conceptual similarities between them. The observation of squeezing certifies light-matter coupling with large quantum cooperativity, a prerequisite for applications in quantum science and technology. In our experiments, we obtain a maximal cooperativity of $C_\mathrm{qu} =10$ for the spin and $C_\mathrm{qu} = 9$ for the membrane. In particular, our results pave the way for hybrid quantum systems where spin and mechanical degrees of freedom are coherently coupled via light, enabling new protocols for quantum state transfer and entanglement generation over macroscopic distances. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_03507 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Squeezing light with optomechanical and spin-light quantum interfaces Schmid, Gian-Luca Aguilera, Manel Bosch Ngai, Chun Tat Ernzer, Maryse Filho, Luiz Couto Correa Pinto Høj, Dennis Andersen, Ulrik Lund Goschin, Florian Treutlein, Philipp Quantum Physics Atomic Physics Optics We investigate squeezing of light through quantum-noise-limited interactions with two different material systems: an ultracold atomic spin ensemble and a micromechanical membrane. Both systems feature a light-matter quantum interface that we exploit, respectively, to generate polarization squeezing of light through Faraday interaction with the collective atomic spin precession, and ponderomotive quadrature squeezing of light through radiation pressure interaction with the membrane vibrations in an optical cavity. Both experiments are described in a common theoretical framework, highlighting the conceptual similarities between them. The observation of squeezing certifies light-matter coupling with large quantum cooperativity, a prerequisite for applications in quantum science and technology. In our experiments, we obtain a maximal cooperativity of $C_\mathrm{qu} =10$ for the spin and $C_\mathrm{qu} = 9$ for the membrane. In particular, our results pave the way for hybrid quantum systems where spin and mechanical degrees of freedom are coherently coupled via light, enabling new protocols for quantum state transfer and entanglement generation over macroscopic distances. |
| title | Squeezing light with optomechanical and spin-light quantum interfaces |
| topic | Quantum Physics Atomic Physics Optics |
| url | https://arxiv.org/abs/2504.03507 |