تقرير
Site-resolved imaging of a fermionic Mott insulator
| العنوان: | Site-resolved imaging of a fermionic Mott insulator |
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| المؤلفون: | Greif, Daniel, Parsons, Maxwell F., Mazurenko, Anton, Chiu, Christie S., Blatt, Sebastian, Huber, Florian, Ji, Geoffrey, Greiner, Markus |
| المصدر: | Science 351, 953-957 (2016) |
| سنة النشر: | 2015 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Quantum Gases |
| الوصف: | The complexity of quantum many-body systems originates from the interplay of strong interactions, quantum statistics, and the large number of quantum-mechanical degrees of freedom. Probing these systems on a microscopic level with single-site resolution offers important insights. Here we report site-resolved imaging of two-component fermionic Mott insulators, metals, and band insulators using ultracold atoms in a square lattice. For strong repulsive interactions we observe two-dimensional Mott insulators containing over 400 atoms. For intermediate interactions, we observe a coexistence of phases. From comparison to theory we find trap-averaged entropies per particle of $1.0\,k_{\mathrm{B}}$. In the band-insulator we find local entropies as low as $0.5\,k_{\mathrm{B}}$. Access to local observables will aid the understanding of fermionic many-body systems in regimes inaccessible by modern theoretical methods. Comment: 6+7 pages |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1126/science.aad9041 |
| URL الوصول: | http://arxiv.org/abs/1511.06366 |
| رقم الأكسشن: | edsarx.1511.06366 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1126/science.aad9041 |
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