Quasiparticle dynamics in a Bose insulator probed by inter-band Bragg spectroscopy
arXiv:1109.1241 · doi:10.1103/PhysRevLett.109.055301
Abstract
We investigate experimentally and theoretically the dynamical properties of a Mott insulator in decoupled one-dimensional chains. Using a theoretical analysis of the Bragg excitation scheme we show that the spectrum of inter-band transitions holds information on the single-particle Green's function of the insulator. In particular the existence of particle-hole coherence due to quantum fluctuations in the Mott state is clearly seen in the Bragg spectra and quantified. Finally we propose a scheme to directly measure the full, momentum resolved spectral function as obtained in angle-resolved photoemission spectroscopy of solids.
The new version contains improved theoretical treatment and data analysis
References in corpus (12)
- Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
- Single-Atom Resolved Fluorescence Imaging of an Atomic Mott Insulator
- Probing the Superfluid to Mott Insulator Transition at the Single Atom Level
- Using photoemission spectroscopy to probe a strongly interacting Fermi gas
- Spatial quantum noise interferometry in expanding ultracold atom clouds
- 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
- Condensate fraction in a 2D Bose gas measured across the Mott-insulator transition
- Detecting the Amplitude Mode of Strongly Interacting Lattice Bosons by Bragg Scattering
- Measuring the one-particle excitations of ultracold fermionic atoms by stimulated Raman spectroscopy
- Multi-band spectroscopy of ultracold fermions: Observation of reduced tunneling in attractive Bose-Fermi mixtures
- Probing quasi-particle states in strongly interacting atomic gases by momentum-resolved Raman photoemission spectroscopy
Cited by in corpus (22)
- Fermi gases in one dimension: From Bethe Ansatz to experiments
- Solution for an interaction quench in the Lieb-Liniger Bose gas
- Measurement of spectral functions of ultracold atoms in disordered potentials
- Intrinsic Photoconductivity of Ultracold Fermions in Optical Lattices
- Bragg spectroscopy of clean and disordered lattice bosons in one dimension: a spectral fingerprint of the Bose glass
- Momentum-space atom correlations in a Mott insulator
- High-precision multiband spectroscopy of ultracold fermions in a nonseparable optical lattice
- Steady-state properties of a thermodynamically unbalanced Fermi gas
- Beyond the Hubbard bands in strongly correlated lattice bosons
- Resonant excitations of a Bose Einstein condensate in an optical lattice
- Enhancement of chiral edge currents in (+1)-dimensional atomic Mott-band hybrid insulators
- Lattice assisted spectroscopy: a generalized scanning tunnelling microscope for ultra-cold atoms
- Particle-hole character of the Higgs and Goldstone modes in strongly-interacting lattice bosons
- Numerical calculation of spectral functions of the Bose-Hubbard model using B-DMFT
- Probing quantum many-body correlations by universal ramping dynamics
- Finding the phase diagram of strongly-correlated disordered bosons using quantum quenches
- Matter-wave scattering from interacting bosons in an optical lattice
- One-particle spectral functions of the one-dimensional Fermionic Hubbard model with one fermion per site at zero and finite magnetic fields
- A continuous model for bosonic hard spheres in quasi one-dimensional optical lattices
- Emergence of damped-localized excitations of the Mott state due to disorder
- Energy and momentum transfer in one-dimensional trapped gases by stimulated light scattering
- One-particle spectral function singularities in a one-dimensional gas of spin-1/2 fermions with repulsive delta-function interaction