%0 Journal Article %1 Deutsch2010Spin %A Deutsch, C. %A Ramirez-Martinez, F. %A Lacroûte, C. %A Reinhard, F. %A Schneider, T. %A Fuchs, J. N. %A Piéchon, F. %A Laloë, F. %A Reichel, J. %A Rosenbusch, P. %D 2010 %I American Physical Society %J Physical Review Letters %K clocks, coherence, ensembles, isre, marquis, qip-special %N 2 %P 020401+ %R 10.1103/physrevlett.105.020401 %T Spin Self-Rephasing and Very Long Coherence Times in a Trapped Atomic Ensemble %U http://dx.doi.org/10.1103/physrevlett.105.020401 %V 105 %X We perform Ramsey spectroscopy on the ground state of ultracold 87Rb atoms magnetically trapped on a chip in the Knudsen regime. Field inhomogeneities over the sample should limit the 1/e contrast decay time to about 3 s, while decay times of 58±12  s are actually observed. We explain this surprising result by a spin self-rephasing mechanism induced by the identical spin rotation effect originating from particle indistinguishability. We propose a theory of this synchronization mechanism and obtain good agreement with the experimental observations. The effect is general and may appear in other physical systems.

@article{Deutsch2010Spin, abstract = {{We perform Ramsey spectroscopy on the ground state of ultracold 87Rb atoms magnetically trapped on a chip in the Knudsen regime. Field inhomogeneities over the sample should limit the 1/e contrast decay time to about 3 s, while decay times of 58±12  s are actually observed. We explain this surprising result by a spin self-rephasing mechanism induced by the identical spin rotation effect originating from particle indistinguishability. We propose a theory of this synchronization mechanism and obtain good agreement with the experimental observations. The effect is general and may appear in other physical systems.}}, added-at = {2019-02-26T15:22:34.000+0100}, author = {Deutsch, C. and Ramirez-Martinez, F. and Lacro\^{u}te, C. and Reinhard, F. and Schneider, T. and Fuchs, J. N. and Pi\'{e}chon, F. and Lalo\"{e}, F. and Reichel, J. and Rosenbusch, P.}, biburl = {https://www.bibsonomy.org/bibtex/28668490cc8bd40cdbf43b492a24dd408/rspreeuw}, citeulike-article-id = {7706731}, citeulike-linkout-0 = {http://dx.doi.org/10.1103/physrevlett.105.020401}, citeulike-linkout-1 = {http://link.aps.org/abstract/PRL/v105/i2/e020401}, citeulike-linkout-2 = {http://link.aps.org/pdf/PRL/v105/i2/e020401}, doi = {10.1103/physrevlett.105.020401}, interhash = {338aaecfda4b8fd38f1886fe1aab30dc}, intrahash = {8668490cc8bd40cdbf43b492a24dd408}, issn = {0031-9007}, journal = {Physical Review Letters}, keywords = {clocks, coherence, ensembles, isre, marquis, qip-special}, month = jul, number = 2, pages = {020401+}, posted-at = {2011-10-04 20:32:31}, priority = {2}, publisher = {American Physical Society}, timestamp = {2019-02-26T15:22:34.000+0100}, title = {{Spin Self-Rephasing and Very Long Coherence Times in a Trapped Atomic Ensemble}}, url = {http://dx.doi.org/10.1103/physrevlett.105.020401}, volume = 105, year = 2010 }