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Extended coherence time on the clock transition of optically trapped Rubidium
- 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
- Subjects :
- Coherence time
Quantum decoherence
Atomic Physics (physics.atom-ph)
Dephasing
FOS: Physical sciences
General Physics and Astronomy
Technical improvement
Frequency shift
General nature
Frequency standard
New mechanisms
Electromagnetic radiation
Frequency measurements
Physics - Atomic Physics
Quantum mechanics
Atom
Quantum memories
ddc:530
A-stability
Quantum
Spin-½
Light shift
Physics
Systematic investigations
Quantum Physics
Inhomogeneous density
Integration time
Clock transition
Noise contributions
Quantum Gases (cond-mat.quant-gas)
Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik
Atomic physics
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Quantum Physics (quant-ph)
entanglement
Condensed Matter - Quantum Gases
Subjects
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⟩