Observing the two-dimensional Bose glass in an optical quasicrystal
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arXiv
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| Format: | Preprint |
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2023
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| _version_ | 1866912366875115520 |
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| author | Yu, Jr-Chiun Bhave, Shaurya Reeve, Lee Song, Bo Schneider, Ulrich |
| author_facet | Yu, Jr-Chiun Bhave, Shaurya Reeve, Lee Song, Bo Schneider, Ulrich |
| contents | The combined effect of disorder and interactions is central to the richness of condensed matter physics and can lead to novel quantum states such as the Bose glass phase in disordered bosonic systems. Here, we report on the experimental realisation of the two-dimensional Bose glass using ultra-cold atoms in an eight-fold symmetric quasicrystalline optical lattice. By probing the coherence properties of the system, we observe a Bose glass to superfluid transition and map out the phase diagram in the weakly interacting regime. Moreover, we reveal the non-ergodic nature of the Bose glass by probing the capability to restore coherence. Our observations are in good agreement with recent quantum Monte Carlo predictions and pave the way for experimentally testing the connection between the Bose glass, many-body localisation, and glassy dynamics more generally. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2303_00737 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Observing the two-dimensional Bose glass in an optical quasicrystal Yu, Jr-Chiun Bhave, Shaurya Reeve, Lee Song, Bo Schneider, Ulrich Quantum Gases Disordered Systems and Neural Networks Strongly Correlated Electrons Quantum Physics The combined effect of disorder and interactions is central to the richness of condensed matter physics and can lead to novel quantum states such as the Bose glass phase in disordered bosonic systems. Here, we report on the experimental realisation of the two-dimensional Bose glass using ultra-cold atoms in an eight-fold symmetric quasicrystalline optical lattice. By probing the coherence properties of the system, we observe a Bose glass to superfluid transition and map out the phase diagram in the weakly interacting regime. Moreover, we reveal the non-ergodic nature of the Bose glass by probing the capability to restore coherence. Our observations are in good agreement with recent quantum Monte Carlo predictions and pave the way for experimentally testing the connection between the Bose glass, many-body localisation, and glassy dynamics more generally. |
| title | Observing the two-dimensional Bose glass in an optical quasicrystal |
| topic | Quantum Gases Disordered Systems and Neural Networks Strongly Correlated Electrons Quantum Physics |
| url | https://arxiv.org/abs/2303.00737 |