Hyperfine spectra of trapped bosons in optical lattices

2007/08/27 by Kaden R. A. Hazzard, Erich J. Mueller
Chemistry · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum, superfluid, helium dynamics #Spectroscopy and Laser Applications #cond-mat.other

paper · pdf · doi:10.1103/physreva.76.063612

published as Phys. Rev. A 76, 063612 (2007) · 7 pages, 5 figures, revtex4

arxiv created 2007/08/27 · openalex publication_date 2007/12/13 · arxiv updated 2010/03/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We calculate the interaction induced inhomogeneous broadening of spectral lines in a trapped Bose gas as a function of the depth of a three-dimensional cubic optical lattice. As observed in recent experiments, we find that the terraced ``wedding-cake'' structure of Mott plateaus splits the spectrum into a series of discrete peaks. The spectra are extremely sensitive to density corrugations and trap anharmonicities. For example, even when the majority of the cloud is superfluid the spectrum displays discrete peaks.

Citations

• Sum rule for the optical spectrum of a trapped gas
• Imaging the Mott Insulator Shells by Using Atomic Clock Shifts
• Bose-Einstein Condensation of Atomic Hydrogen
• Formation of Spatial Shell Structure in the Superfluid to Mott Insulator Transition
• Defect-Suppressed Atomic Crystals in an Optical Lattice
• On-site number statistics of ultracold lattice bosons
• Spatial quantum noise interferometry in expanding ultracold atom clouds