Quantifying and Controlling Prethermal Nonergodicity in Interacting Floquet Matter
The use of periodic driving for synthesizing many-body quantum states depends crucially on the existence of a prethermal regime, which exhibits drive-tunable properties while forestalling the effects of heating. This dependence motivates the search for direct experimental probes of the underlying lo...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2019-10-01
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| Series: | Physical Review X |
| Online Access: | http://doi.org/10.1103/PhysRevX.9.041021 |
| _version_ | 1818741225631514624 |
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| author | K. Singh C. J. Fujiwara Z. A. Geiger E. Q. Simmons M. Lipatov A. Cao P. Dotti S. V. Rajagopal R. Senaratne T. Shimasaki M. Heyl A. Eckardt D. M. Weld |
| author_facet | K. Singh C. J. Fujiwara Z. A. Geiger E. Q. Simmons M. Lipatov A. Cao P. Dotti S. V. Rajagopal R. Senaratne T. Shimasaki M. Heyl A. Eckardt D. M. Weld |
| author_sort | K. Singh |
| collection | DOAJ |
| description | The use of periodic driving for synthesizing many-body quantum states depends crucially on the existence of a prethermal regime, which exhibits drive-tunable properties while forestalling the effects of heating. This dependence motivates the search for direct experimental probes of the underlying localized nonergodic nature of the wave function in this metastable regime. We report experiments on a many-body Floquet system consisting of atoms in an optical lattice subjected to ultrastrong sign-changing amplitude modulation. Using a double-quench protocol, we measure an inverse participation ratio quantifying the degree of prethermal localization as a function of tunable drive parameters and interactions. We obtain a complete prethermal map of the drive-dependent properties of Floquet matter spanning four square decades of parameter space. Following the full time evolution, we observe sequential formation of two prethermal plateaux, interaction-driven ergodicity, and strongly frequency-dependent dynamics of long-time thermalization. The quantitative characterization of the prethermal Floquet matter realized in these experiments, along with the demonstration of control of its properties by variation of drive parameters and interactions, opens a new frontier for probing far-from-equilibrium quantum statistical mechanics and new possibilities for dynamical quantum engineering. |
| first_indexed | 2024-12-18T01:53:15Z |
| format | Article |
| id | doaj.art-57275537db3b42f590ab058f7e3eb833 |
| institution | Directory Open Access Journal |
| issn | 2160-3308 |
| language | English |
| last_indexed | 2024-12-18T01:53:15Z |
| publishDate | 2019-10-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review X |
| spelling | doaj.art-57275537db3b42f590ab058f7e3eb8332022-12-21T21:24:58ZengAmerican Physical SocietyPhysical Review X2160-33082019-10-019404102110.1103/PhysRevX.9.041021Quantifying and Controlling Prethermal Nonergodicity in Interacting Floquet MatterK. SinghC. J. FujiwaraZ. A. GeigerE. Q. SimmonsM. LipatovA. CaoP. DottiS. V. RajagopalR. SenaratneT. ShimasakiM. HeylA. EckardtD. M. WeldThe use of periodic driving for synthesizing many-body quantum states depends crucially on the existence of a prethermal regime, which exhibits drive-tunable properties while forestalling the effects of heating. This dependence motivates the search for direct experimental probes of the underlying localized nonergodic nature of the wave function in this metastable regime. We report experiments on a many-body Floquet system consisting of atoms in an optical lattice subjected to ultrastrong sign-changing amplitude modulation. Using a double-quench protocol, we measure an inverse participation ratio quantifying the degree of prethermal localization as a function of tunable drive parameters and interactions. We obtain a complete prethermal map of the drive-dependent properties of Floquet matter spanning four square decades of parameter space. Following the full time evolution, we observe sequential formation of two prethermal plateaux, interaction-driven ergodicity, and strongly frequency-dependent dynamics of long-time thermalization. The quantitative characterization of the prethermal Floquet matter realized in these experiments, along with the demonstration of control of its properties by variation of drive parameters and interactions, opens a new frontier for probing far-from-equilibrium quantum statistical mechanics and new possibilities for dynamical quantum engineering.http://doi.org/10.1103/PhysRevX.9.041021 |
| spellingShingle | K. Singh C. J. Fujiwara Z. A. Geiger E. Q. Simmons M. Lipatov A. Cao P. Dotti S. V. Rajagopal R. Senaratne T. Shimasaki M. Heyl A. Eckardt D. M. Weld Quantifying and Controlling Prethermal Nonergodicity in Interacting Floquet Matter Physical Review X |
| title | Quantifying and Controlling Prethermal Nonergodicity in Interacting Floquet Matter |
| title_full | Quantifying and Controlling Prethermal Nonergodicity in Interacting Floquet Matter |
| title_fullStr | Quantifying and Controlling Prethermal Nonergodicity in Interacting Floquet Matter |
| title_full_unstemmed | Quantifying and Controlling Prethermal Nonergodicity in Interacting Floquet Matter |
| title_short | Quantifying and Controlling Prethermal Nonergodicity in Interacting Floquet Matter |
| title_sort | quantifying and controlling prethermal nonergodicity in interacting floquet matter |
| url | http://doi.org/10.1103/PhysRevX.9.041021 |
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