Rotational Coherence Times of Polar Molecules in Optical Tweezers
Qubit coherence times are critical to the performance of any robust quantum computing platform. For quantum information processing using arrays of polar molecules, a key performance parameter is the molecular rotational coherence time. We report a 93(7) ms coherence time for rotational state qubits...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society (APS)
2022
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| Online Access: | https://hdl.handle.net/1721.1/141990 |
| _version_ | 1811086143542788096 |
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| author | Burchesky, Sean Anderegg, Loïc Bao, Yicheng Yu, Scarlett S Chae, Eunmi Ketterle, Wolfgang Ni, Kang-Kuen Doyle, John M |
| author_facet | Burchesky, Sean Anderegg, Loïc Bao, Yicheng Yu, Scarlett S Chae, Eunmi Ketterle, Wolfgang Ni, Kang-Kuen Doyle, John M |
| author_sort | Burchesky, Sean |
| collection | MIT |
| description | Qubit coherence times are critical to the performance of any robust quantum computing platform. For quantum information processing using arrays of polar molecules, a key performance parameter is the molecular rotational coherence time. We report a 93(7) ms coherence time for rotational state qubits of laser cooled CaF molecules in optical tweezer traps, over an order of magnitude longer than previous systems. Inhomogeneous broadening due to the differential polarizability between the qubit states is suppressed by tuning the tweezer polarization and applied magnetic field to a "magic" angle. The coherence time is limited by the residual differential polarizability, implying improvement with further cooling. A single spin-echo pulse is able to extend the coherence time to nearly half a second. The measured coherence times demonstrate the potential of polar molecules as high fidelity qubits. |
| first_indexed | 2024-09-23T13:21:33Z |
| format | Article |
| id | mit-1721.1/141990 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T13:21:33Z |
| publishDate | 2022 |
| publisher | American Physical Society (APS) |
| record_format | dspace |
| spelling | mit-1721.1/1419902022-04-21T03:19:53Z Rotational Coherence Times of Polar Molecules in Optical Tweezers Burchesky, Sean Anderegg, Loïc Bao, Yicheng Yu, Scarlett S Chae, Eunmi Ketterle, Wolfgang Ni, Kang-Kuen Doyle, John M Qubit coherence times are critical to the performance of any robust quantum computing platform. For quantum information processing using arrays of polar molecules, a key performance parameter is the molecular rotational coherence time. We report a 93(7) ms coherence time for rotational state qubits of laser cooled CaF molecules in optical tweezer traps, over an order of magnitude longer than previous systems. Inhomogeneous broadening due to the differential polarizability between the qubit states is suppressed by tuning the tweezer polarization and applied magnetic field to a "magic" angle. The coherence time is limited by the residual differential polarizability, implying improvement with further cooling. A single spin-echo pulse is able to extend the coherence time to nearly half a second. The measured coherence times demonstrate the potential of polar molecules as high fidelity qubits. 2022-04-20T18:27:05Z 2022-04-20T18:27:05Z 2021 2022-04-20T18:22:29Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/141990 Burchesky, Sean, Anderegg, Loïc, Bao, Yicheng, Yu, Scarlett S, Chae, Eunmi et al. 2021. "Rotational Coherence Times of Polar Molecules in Optical Tweezers." Physical Review Letters, 127 (12). en 10.1103/PHYSREVLETT.127.123202 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society (APS) APS |
| spellingShingle | Burchesky, Sean Anderegg, Loïc Bao, Yicheng Yu, Scarlett S Chae, Eunmi Ketterle, Wolfgang Ni, Kang-Kuen Doyle, John M Rotational Coherence Times of Polar Molecules in Optical Tweezers |
| title | Rotational Coherence Times of Polar Molecules in Optical Tweezers |
| title_full | Rotational Coherence Times of Polar Molecules in Optical Tweezers |
| title_fullStr | Rotational Coherence Times of Polar Molecules in Optical Tweezers |
| title_full_unstemmed | Rotational Coherence Times of Polar Molecules in Optical Tweezers |
| title_short | Rotational Coherence Times of Polar Molecules in Optical Tweezers |
| title_sort | rotational coherence times of polar molecules in optical tweezers |
| url | https://hdl.handle.net/1721.1/141990 |
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