Internal state cooling of an atom with thermal light
Fuente:
arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| Acceso en línea: | |
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| _version_ | 1866913573679136768 |
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| author | Younes, Amanda Putnam, Randall Hamilton, Paul Campbell, Wesley C. |
| author_facet | Younes, Amanda Putnam, Randall Hamilton, Paul Campbell, Wesley C. |
| contents | A near-minimal instance of optical cooling is experimentally presented wherein the internal-state entropy of a single atom is reduced more than twofold by illuminating it with broadband, incoherent light. Since the rate of optical pumping by a thermal state increases monotonically with its temperature, the cooling power in this scenario increases with higher thermal occupation, an example of a phenomenon known as cooling by heating. In contrast to optical pumping by coherent, narrow-band laser light, here we perform the same task with fiber-coupled, broadband sunlight, the brightest laboratory-accessible source of continuous blackbody radiation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_04733 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Internal state cooling of an atom with thermal light Younes, Amanda Putnam, Randall Hamilton, Paul Campbell, Wesley C. Quantum Physics Atomic Physics A near-minimal instance of optical cooling is experimentally presented wherein the internal-state entropy of a single atom is reduced more than twofold by illuminating it with broadband, incoherent light. Since the rate of optical pumping by a thermal state increases monotonically with its temperature, the cooling power in this scenario increases with higher thermal occupation, an example of a phenomenon known as cooling by heating. In contrast to optical pumping by coherent, narrow-band laser light, here we perform the same task with fiber-coupled, broadband sunlight, the brightest laboratory-accessible source of continuous blackbody radiation. |
| title | Internal state cooling of an atom with thermal light |
| topic | Quantum Physics Atomic Physics |
| url | https://arxiv.org/abs/2411.04733 |