In situ imaging of the thermal de Broglie wavelength in an ultracold Bose gas
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866916479490850816 |
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| author | Xiang, Jinggang Cruz-Colón, Enid Chua, Candice C. Milner, William R. de Hond, Julius Fricke, Jacob F. Ketterle, Wolfgang |
| author_facet | Xiang, Jinggang Cruz-Colón, Enid Chua, Candice C. Milner, William R. de Hond, Julius Fricke, Jacob F. Ketterle, Wolfgang |
| contents | We report the first in situ observation of density fluctuations on the scale of the thermal de Broglie wavelength in an ultracold gas of bosons. Bunching of $^{87}$Rb atoms in a quasi two-dimensional system is observed by single-atom imaging using a quantum gas microscope. Compared to a classical ensemble, we observe a 30 percent enhancement of the second-order correlation function. We show the spatial and thermal dependence of these correlations. The reported method of detecting in situ correlations can be applied to interacting many-body systems and to the study of critical phenomena near phase transitions. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2411_08779 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | In situ imaging of the thermal de Broglie wavelength in an ultracold Bose gas Xiang, Jinggang Cruz-Colón, Enid Chua, Candice C. Milner, William R. de Hond, Julius Fricke, Jacob F. Ketterle, Wolfgang Quantum Gases Atomic Physics Quantum Physics We report the first in situ observation of density fluctuations on the scale of the thermal de Broglie wavelength in an ultracold gas of bosons. Bunching of $^{87}$Rb atoms in a quasi two-dimensional system is observed by single-atom imaging using a quantum gas microscope. Compared to a classical ensemble, we observe a 30 percent enhancement of the second-order correlation function. We show the spatial and thermal dependence of these correlations. The reported method of detecting in situ correlations can be applied to interacting many-body systems and to the study of critical phenomena near phase transitions. |
| title | In situ imaging of the thermal de Broglie wavelength in an ultracold Bose gas |
| topic | Quantum Gases Atomic Physics Quantum Physics |
| url | https://arxiv.org/abs/2411.08779 |