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Extended coherence time on the clock transition of optically trapped Rubidium

Authors :
F. Piéchon
Jan J. Arlt
Ernst M. Rasel
Carsten Klempt
Peter Rosenbusch
J. Will
F. Ramirez-Martinez
Wolfgang Ertmer
G. Kleine Büning
Institut für Quantenoptik, Leibniz Universität Hannover
QUANTOP, Institut for Fysik og Astronomi, Aarhus Universitet
Systèmes de Référence Temps Espace (SYRTE)
Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris
Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)
Métrologie des fréquences optiques
Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris
Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris
Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)
Interférométrie Atomique et Capteurs Inertiels
Références micro-ondes et échelles de temps
Laboratoire de Physique des Solides (LPS)
Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)
Source :
Physical Review Letters 106 (2011), Nr. 24, Physical Review Letters, Physical Review Letters, 2011, 106, pp.240801. ⟨10.1103/PhysRevLett.106.240801⟩, Kleine Büning, G, Will, J, Ertmer, W, Rasel, E, Arlt, J, Klempt, C, Ramirez-Martinez, F, Piéchon, F & Rosenbusch, P 2011, ' Extended Coherence Time on the Clock Transition of Optically Trapped Rubidium ', Physical Review Letters, vol. 106, no. 24, pp. 240801 . https://doi.org/10.1103/PhysRevLett.106.240801
Publication Year :
2011

Abstract

Optically trapped ensembles are of crucial importance for frequency measurements and quantum memories, but generally suffer from strong dephasing due to inhomogeneous density and light shifts. We demonstrate a drastic increase of the coherence time to 21 s on the magnetic field insensitive clock transition of Rb-87 by applying the recently discovered spin self-rephasing. This result confirms the general nature of this new mechanism and thus shows its applicability in atom clocks and quantum memories. A systematic investigation of all relevant frequency shifts and noise contributions yields a stability of 2.4E-11 x tau^(-1/2), where tau is the integration time in seconds. Based on a set of technical improvements, the presented frequency standard is predicted to rival the stability of microwave fountain clocks in a potentially much more compact setup.<br />5 pages, 4 figures

Details

Language :
English
ISSN :
00319007 and 10797114
Database :
OpenAIRE
Journal :
Physical Review Letters 106 (2011), Nr. 24, Physical Review Letters, Physical Review Letters, 2011, 106, pp.240801. ⟨10.1103/PhysRevLett.106.240801⟩, Kleine Büning, G, Will, J, Ertmer, W, Rasel, E, Arlt, J, Klempt, C, Ramirez-Martinez, F, Piéchon, F & Rosenbusch, P 2011, ' Extended Coherence Time on the Clock Transition of Optically Trapped Rubidium ', Physical Review Letters, vol. 106, no. 24, pp. 240801 . https://doi.org/10.1103/PhysRevLett.106.240801
Accession number :
edsair.doi.dedup.....8dff9bdbf7592b69d9bce5c9b3c61220
Full Text :
https://doi.org/10.1103/PhysRevLett.106.240801⟩