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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2412.14117 |
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| _version_ | 1866913617185603584 |
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| author | Dania, Lorenzo Kremer, Oscar Schmitt Piotrowski, Johannes Candoli, Davide Vijayan, Jayadev Romero-Isart, Oriol Gonzalez-Ballestero, Carlos Novotny, Lukas Frimmer, Martin |
| author_facet | Dania, Lorenzo Kremer, Oscar Schmitt Piotrowski, Johannes Candoli, Davide Vijayan, Jayadev Romero-Isart, Oriol Gonzalez-Ballestero, Carlos Novotny, Lukas Frimmer, Martin |
| contents | Exploiting quantum effects of mechanical motion, such as backaction evading measurements or squeezing, requires preparation of the oscillator in a high-purity state. The largest state purities in optomechanics to date have relied on cryogenic cooling, combined with coupling to electromagnetic resonators driven with a coherent radiation field. In this work, we cool the mega-hertz-frequency librational mode of an optically levitated silica nanoparticle from room temperature to its quantum ground state. Cooling is realized by coherent scattering into a Fabry-Perot cavity. We use sideband thermometry to infer a phonon population of 0.04 quanta under optimal conditions, corresponding to a state purity of 92%. The purity reached by our room-temperature experiment exceeds the performance offered by mechanically clamped oscillators in a cryogenic environment. Our work establishes a platform for high-purity quantum optomechanics at room temperature. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_14117 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | High-purity quantum optomechanics at room temperature Dania, Lorenzo Kremer, Oscar Schmitt Piotrowski, Johannes Candoli, Davide Vijayan, Jayadev Romero-Isart, Oriol Gonzalez-Ballestero, Carlos Novotny, Lukas Frimmer, Martin Quantum Physics Exploiting quantum effects of mechanical motion, such as backaction evading measurements or squeezing, requires preparation of the oscillator in a high-purity state. The largest state purities in optomechanics to date have relied on cryogenic cooling, combined with coupling to electromagnetic resonators driven with a coherent radiation field. In this work, we cool the mega-hertz-frequency librational mode of an optically levitated silica nanoparticle from room temperature to its quantum ground state. Cooling is realized by coherent scattering into a Fabry-Perot cavity. We use sideband thermometry to infer a phonon population of 0.04 quanta under optimal conditions, corresponding to a state purity of 92%. The purity reached by our room-temperature experiment exceeds the performance offered by mechanically clamped oscillators in a cryogenic environment. Our work establishes a platform for high-purity quantum optomechanics at room temperature. |
| title | High-purity quantum optomechanics at room temperature |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2412.14117 |