Spectroscopy of ultracold atoms by periodic lattice modulations

Abstract

We present a non-perturbative analysis of a new experimental technique for probing ultracold bosons in an optical lattice by periodic lattice depth modulations. This is done using the time-dependent density-matrix renormalization group method. We find that sharp energy absorption peaks are not unique to the Mott insulating phase at commensurate filling, but also exist for superfluids at incommensurate filling. For strong interactions the peak structure provides an experimental measure of the interaction strength. Moreover, the peak height of the second peak can be employed as a measure of the incommensurability of the system.

References in corpus (3)

• Real time evolution using the density matrix renormalization group
• Observation of the Pairing Gap in a Strongly Interacting Fermi Gas
• Spatial quantum noise interferometry in expanding ultracold atom clouds

Cited by in corpus (17)

• Many-Body Physics with Ultracold Gases
• The density-matrix renormalization group in the age of matrix product states
• Color Superfluidity and "Baryon" Formation in Ultracold Fermions
• 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
• Entanglement in a periodic quench
• Interaction-Induced Adiabatic Cooling for Antiferromagnetism in Optical Lattices
• Wavepacket dynamics in energy space of a chaotic trimeric Bose-Hubbard system
• Heating dynamics of bosonic atoms in a noisy optical lattice
• Density matrix renormalization group study of a quantum impurity model with Landau-Zener time-dependent Hamiltonian
• Lattice modulation spectroscopy of strongly interacting bosons in disordered and quasi-periodic optical lattices
• Finite-size effects in Anderson localization of one-dimensional Bose-Einstein condensates
• Spin correlations and doublon production rate for fermionic atoms in modulated optical lattices
• Response of Bose gases in time-dependent optical superlattices
• Ultracold Bose gases in time-dependent 1D superlattices: response and quasimomentum structure
• Controlled quantum stirring of Bose-Einstein condensates
• Bose-Einstein condensates in disordered potentials