Observing Spin-Squeezed States under Spin-Exchange Collisions for a Second
Using the platform of a trapped-atom clock on a chip, we observe the time evolution of spin-squeezed hyperfine clock states in ultracold rubidium atoms on previously inaccessible time scales up to 1 s. The spin degree of freedom remains squeezed after 0.6 s, which is consistent with the limit impose...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2023-05-01
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| Series: | PRX Quantum |
| Online Access: | http://doi.org/10.1103/PRXQuantum.4.020322 |
| _version_ | 1797831371023974400 |
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| author | Meng-Zi Huang Jose Alberto de la Paz Tommaso Mazzoni Konstantin Ott Peter Rosenbusch Alice Sinatra Carlos L. Garrido Alzar Jakob Reichel |
| author_facet | Meng-Zi Huang Jose Alberto de la Paz Tommaso Mazzoni Konstantin Ott Peter Rosenbusch Alice Sinatra Carlos L. Garrido Alzar Jakob Reichel |
| author_sort | Meng-Zi Huang |
| collection | DOAJ |
| description | Using the platform of a trapped-atom clock on a chip, we observe the time evolution of spin-squeezed hyperfine clock states in ultracold rubidium atoms on previously inaccessible time scales up to 1 s. The spin degree of freedom remains squeezed after 0.6 s, which is consistent with the limit imposed by particle loss and is compatible with typical Ramsey times in state-of-the-art microwave clocks. The results also reveal a surprising spin-exchange interaction effect that amplifies the cavity-based spin measurement via a correlation between spin and external degrees of freedom. These results open up perspectives for squeezing-enhanced atomic clocks in a metrologically relevant regime and highlight the importance of spin interactions in real-life applications of spin squeezing. |
| first_indexed | 2024-04-09T13:51:18Z |
| format | Article |
| id | doaj.art-052a975cccc540a68cc48e5a118be6aa |
| institution | Directory Open Access Journal |
| issn | 2691-3399 |
| language | English |
| last_indexed | 2024-04-09T13:51:18Z |
| publishDate | 2023-05-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | PRX Quantum |
| spelling | doaj.art-052a975cccc540a68cc48e5a118be6aa2023-05-08T15:23:41ZengAmerican Physical SocietyPRX Quantum2691-33992023-05-014202032210.1103/PRXQuantum.4.020322Observing Spin-Squeezed States under Spin-Exchange Collisions for a SecondMeng-Zi HuangJose Alberto de la PazTommaso MazzoniKonstantin OttPeter RosenbuschAlice SinatraCarlos L. Garrido AlzarJakob ReichelUsing the platform of a trapped-atom clock on a chip, we observe the time evolution of spin-squeezed hyperfine clock states in ultracold rubidium atoms on previously inaccessible time scales up to 1 s. The spin degree of freedom remains squeezed after 0.6 s, which is consistent with the limit imposed by particle loss and is compatible with typical Ramsey times in state-of-the-art microwave clocks. The results also reveal a surprising spin-exchange interaction effect that amplifies the cavity-based spin measurement via a correlation between spin and external degrees of freedom. These results open up perspectives for squeezing-enhanced atomic clocks in a metrologically relevant regime and highlight the importance of spin interactions in real-life applications of spin squeezing.http://doi.org/10.1103/PRXQuantum.4.020322 |
| spellingShingle | Meng-Zi Huang Jose Alberto de la Paz Tommaso Mazzoni Konstantin Ott Peter Rosenbusch Alice Sinatra Carlos L. Garrido Alzar Jakob Reichel Observing Spin-Squeezed States under Spin-Exchange Collisions for a Second PRX Quantum |
| title | Observing Spin-Squeezed States under Spin-Exchange Collisions for a Second |
| title_full | Observing Spin-Squeezed States under Spin-Exchange Collisions for a Second |
| title_fullStr | Observing Spin-Squeezed States under Spin-Exchange Collisions for a Second |
| title_full_unstemmed | Observing Spin-Squeezed States under Spin-Exchange Collisions for a Second |
| title_short | Observing Spin-Squeezed States under Spin-Exchange Collisions for a Second |
| title_sort | observing spin squeezed states under spin exchange collisions for a second |
| url | http://doi.org/10.1103/PRXQuantum.4.020322 |
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