Multi-band spectroscopy of inhomogeneous Mott-insulator states of ultracold bosons
arXiv:0906.2116 · doi:10.1088/1367-2630/11/10/103030
Abstract
In this work, we use inelastic scattering of light to study the response of inhomogeneous Mott-insulator gases to external excitations. The experimental setup and procedure to probe the atomic Mott states are presented in detail. We discuss the link between the energy absorbed by the gases and accessible experimental parameters as well as the linearity of the response to the scattering of light. We investigate the excitations of the system in multiple energy bands and a band-mapping technique allows us to identify band and momentum of the excited atoms. In addition the momentum distribution in the Mott states which is spread over the entire first Brillouin zone enables us to reconstruct the dispersion relation in the high energy bands using a single Bragg excitation with a fixed momentum transfer.
19 pages, 7 figures
References in corpus (23)
- Many-Body Physics with Ultracold Gases
- Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
- A Mott insulator of fermionic atoms in an optical lattice
- Metallic and Insulating Phases of Repulsively Interacting Fermions in a 3D Optical Lattice
- Spatial quantum noise interferometry in expanding ultracold atom clouds
- The Mott insulator transition in two dimensions
- Atom Interferometry with up to 24-Photon-Momentum-Transfer Beam Splitters
- Imaging the Mott Insulator Shells using Atomic Clock Shifts
- State preparation and dynamics of ultracold atoms in higher lattice orbitals
- Bragg spectroscopy of a strongly interacting 85Rb Bose-Einstein condensate
- Formation of spatial shell structures in the superfluid to Mott insulator transition
- Bragg spectroscopy of a strongly interacting Fermi gas
- Dynamical properties of ultracold bosons in an optical lattice
- Exploring correlated 1D Bose gases from the superfluid to the Mott-insulator state by inelastic light scattering
- Measuring the one-particle excitations of ultracold fermionic atoms by stimulated Raman spectroscopy
- Spectroscopy of ultracold atoms by periodic lattice modulations
- Observation of deviations from ideal gas thermodynamics in a trapped Bose-Einstein condensed gas
- Spectral weight redistribution in strongly correlated bosons in optical lattices
- Critical Temperature and Condensate Fraction of a Fermion Pair Condensate
- Noise correlation spectroscopy of the broken order of a Mott insulating phase
- Excitations of Bose-Einstein condensates in a one-dimensional periodic potential
- Bragg spectroscopy of trapped one dimensional strongly interacting bosons in optical lattices: Probing the cake-structure
- Trap modulation spectroscopy of the Mott-insulator transition in optical lattices
Cited by in corpus (13)
- Fermi-Hubbard physics with atoms in an optical lattice
- Dynamical structure factor of one-dimensional Bose gases: experimental signatures of beyond-Luttinger liquid physics
- Momentum-resolved study of an array of 1D strongly phase-fluctuating Bose gases
- Multi-band spectroscopy of ultracold fermions: Observation of reduced tunneling in attractive Bose-Fermi mixtures
- Tunneling, self-trapping and manipulation of higher modes of a BEC in a double well
- Quasiparticle dynamics in a Bose insulator probed by inter-band Bragg spectroscopy
- Bragg spectroscopy of a superfluid Bose-Hubbard gas
- Geometrically protected triple-point crossings in an optical lattice
- Intrinsic Photoconductivity of Ultracold Fermions in Optical Lattices
- Production and manipulation of wave packets from ultracold atoms in an optical lattice
- Excitations in disordered bosonic optical lattices
- Temperature-dependent excitation spectra of ultra-cold bosons in optical lattices
- Bosonic Kondo-Hubbard model