Efficiently measuring $d$-wave pairing and beyond in quantum gas microscopes
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arXiv
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| Autori principali: | , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866914043421261824 |
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| author | Mark, Daniel K. Hu, Hong-Ye Kwan, Joyce Kokail, Christian Choi, Soonwon Yelin, Susanne F. |
| author_facet | Mark, Daniel K. Hu, Hong-Ye Kwan, Joyce Kokail, Christian Choi, Soonwon Yelin, Susanne F. |
| contents | Understanding the mechanism of high-temperature superconductivity is among the most important problems in physics, for which quantum simulation can provide new insights. However, it remains challenging to characterize superconductivity in existing cold-atom quantum simulation platforms. Here, we introduce a protocol for measuring a broad class of observables in fermionic quantum gas microscopes, including long-range superconducting pairing correlations (after a repulsive-to-attractive mapping). The protocol only requires global controls followed by site-resolved particle number measurements -- capabilities that have been already demonstrated in multiple experiments -- and is designed by analyzing the Hilbert-space structure of dimers of two sites. The protocol is sample efficient and we further optimize our pulses for robustness to experimental imperfections such as lattice inhomogeneity. Our work introduces a general tool for manipulating quantum states on optical lattices, enhancing their ability to tackle problems such as that of high-temperature superconductivity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_13186 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Efficiently measuring $d$-wave pairing and beyond in quantum gas microscopes Mark, Daniel K. Hu, Hong-Ye Kwan, Joyce Kokail, Christian Choi, Soonwon Yelin, Susanne F. Quantum Gases Strongly Correlated Electrons Superconductivity Quantum Physics Understanding the mechanism of high-temperature superconductivity is among the most important problems in physics, for which quantum simulation can provide new insights. However, it remains challenging to characterize superconductivity in existing cold-atom quantum simulation platforms. Here, we introduce a protocol for measuring a broad class of observables in fermionic quantum gas microscopes, including long-range superconducting pairing correlations (after a repulsive-to-attractive mapping). The protocol only requires global controls followed by site-resolved particle number measurements -- capabilities that have been already demonstrated in multiple experiments -- and is designed by analyzing the Hilbert-space structure of dimers of two sites. The protocol is sample efficient and we further optimize our pulses for robustness to experimental imperfections such as lattice inhomogeneity. Our work introduces a general tool for manipulating quantum states on optical lattices, enhancing their ability to tackle problems such as that of high-temperature superconductivity. |
| title | Efficiently measuring $d$-wave pairing and beyond in quantum gas microscopes |
| topic | Quantum Gases Strongly Correlated Electrons Superconductivity Quantum Physics |
| url | https://arxiv.org/abs/2412.13186 |