Clock Shifts of Optical Transitions in Ultracold Atomic Gases

2009/09/21 by Zhenhua Yu, C. J. Pethick · 4 citations
Chemistry · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum optics and atomic interactions #Spectroscopy and Laser Applications #cond-mat.quant-gas

paper · pdf · doi:10.1103/physrevlett.104.010801

published as Phys. Rev. Lett. 104, 010801 (2010) · 4 pages, 1 figure, NORDITA-2009-58

arxiv created 2009/09/21 · openalex publication_date 2010/01/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We calculate the shift, due to interatomic interactions, of an optical transition in an atomic Fermi gas trapped in an optical lattice, as in recent experiments of Campbell et al. [Science 324, 360 (2009)]. Using a pseudospin formalism to describe the density matrix of atoms, we derive a Bloch equation which incorporates both spatial inhomogeneity of the probe laser field and interatomic interactions. Expressions are given for the frequency shift as a function of pulse duration, detuning of the probe laser, and the spatial dependence of the electric field of the probe beam. In the low temperature semiclassical regime, we find that the magnitude of the shift is proportional to the temperature.

Citations

• Decoherence and Collisional Frequency Shifts of Trapped Bosons and Fermions

Cited by

• Collisionally induced atomic clock shifts and correlations
• Quantum correlations and entanglement in far-from-equilibrium spin systems
• Simulating fermions in spin-dependent potentials with spin models on an energy lattice
• Open Quantum Systems at Low Temperature

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