Anomalously extended Floquet prethermal lifetimes and applications to long-time quantum sensing
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866916433854726144 |
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| author | Harkins, Kieren A. Selco, Cooper Bengs, Christian Marchiori, David Moon, Leo Joon Il Zhang, Zhuo-Rui Yang, Aristotle Singh, Angad Druga, Emanuel Song, Yi-Qiao Ajoy, Ashok |
| author_facet | Harkins, Kieren A. Selco, Cooper Bengs, Christian Marchiori, David Moon, Leo Joon Il Zhang, Zhuo-Rui Yang, Aristotle Singh, Angad Druga, Emanuel Song, Yi-Qiao Ajoy, Ashok |
| contents | Floquet prethermalization is observed in periodically driven quantum many-body systems where the system avoids heating and maintains a stable, non-equilibrium state, for extended periods. Here we introduce a novel quantum control method using off-resonance and short-angle excitation to significantly extend Floquet prethermal lifetimes. This is demonstrated on randomly positioned, dipolar-coupled, 13C nuclear spins in diamond, but the methodology is broadly applicable. We achieve a lifetime $T_2'~800 s at 100 K while tracking the transition to the prethermal state quasi-continuously. This corresponds to a >533,000-fold extension over the bare spin lifetime without prethermalization, and constitutes a new record both in terms of absolute lifetime as well as the total number of Floquet pulses applied (here exceeding 7 million). Using Laplace inversion, we develop a new form of noise spectroscopy that provides insights into the origin of the lifetime extension. Finally, we demonstrate applications of these extended lifetimes in long-time, reinitialization-free quantum sensing of time-varying magnetic fields continuously for ~10 minutes at room temperature. Our work facilitates new opportunities for stabilizing driven quantum systems through Floquet control, and opens novel applications for continuously interrogated, long-time responsive quantum sensors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_09028 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Anomalously extended Floquet prethermal lifetimes and applications to long-time quantum sensing Harkins, Kieren A. Selco, Cooper Bengs, Christian Marchiori, David Moon, Leo Joon Il Zhang, Zhuo-Rui Yang, Aristotle Singh, Angad Druga, Emanuel Song, Yi-Qiao Ajoy, Ashok Quantum Physics Mesoscale and Nanoscale Physics Floquet prethermalization is observed in periodically driven quantum many-body systems where the system avoids heating and maintains a stable, non-equilibrium state, for extended periods. Here we introduce a novel quantum control method using off-resonance and short-angle excitation to significantly extend Floquet prethermal lifetimes. This is demonstrated on randomly positioned, dipolar-coupled, 13C nuclear spins in diamond, but the methodology is broadly applicable. We achieve a lifetime $T_2'~800 s at 100 K while tracking the transition to the prethermal state quasi-continuously. This corresponds to a >533,000-fold extension over the bare spin lifetime without prethermalization, and constitutes a new record both in terms of absolute lifetime as well as the total number of Floquet pulses applied (here exceeding 7 million). Using Laplace inversion, we develop a new form of noise spectroscopy that provides insights into the origin of the lifetime extension. Finally, we demonstrate applications of these extended lifetimes in long-time, reinitialization-free quantum sensing of time-varying magnetic fields continuously for ~10 minutes at room temperature. Our work facilitates new opportunities for stabilizing driven quantum systems through Floquet control, and opens novel applications for continuously interrogated, long-time responsive quantum sensors. |
| title | Anomalously extended Floquet prethermal lifetimes and applications to long-time quantum sensing |
| topic | Quantum Physics Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2410.09028 |