Feshbach modulation spectroscopy
arXiv:1408.0206 · doi:10.1103/PhysRevA.92.053612
Abstract
In the vicinity of a Feshbach resonance, a system of ultracold atoms on an optical lattice undergoes rich physical transformations which involve molecule formation and hopping of molecules on the lattice and thus goes beyond a single-band Hubbard model description. We propose to probe the behavior of this system with a harmonic modulation of the magnetic field, and thus of the scattering length, across the Feshbach resonance, as an alternative to lattice-depth modulation spectroscopy. In the regime in which the single-band Hubbard model is still valid, we provide simulation data for this type of spectroscopy. The method may uncover a route towards the efficient creation of ultracold molecules and provides an alternate means for lattice modulation spectroscopy.
5 pages, 3 figures
References in corpus (17)
- Many-Body Physics with Ultracold Gases
- A High Phase-Space-Density Gas of Polar Molecules
- An SU(N) Mott insulator of an atomic Fermi gas realized by large-spin Pomeranchuk cooling
- Creation of a low-entropy quantum gas of polar molecules in an optical lattice
- Spectroscopy of ultracold atoms by periodic lattice modulations
- Collective excitation of a Bose-Einstein condensate by modulation of the atomic scattering length
- Ultracold Lattice Gases with Periodically Modulated Interactions
- Probing nearest-neighbor correlations of ultracold fermions in an optical lattice
- Determination of atomic scattering lengths from measurements of molecular binding energies near Feshbach resonances
- Association of ultracold double-species bosonic molecules
- Quantum simulation of correlated-hopping models with fermions in optical lattices
- Exploring Unconventional Hubbard Models with Doubly Modulated Lattice Gases
- Dynamically Generated Double Occupancy as a Probe of Cold Atom Systems
- Probing the FFLO phase by double occupancy modulation spectroscopy
- Spin correlations and doublon production rate for fermionic atoms in modulated optical lattices
- Dynamical Unbinding Transition in a Periodically Driven Mott Insulator
- Simulation of inhomogeneous distributions of ultracold atoms in an optical lattice via a massively parallel implementation of nonequilibrium strong-coupling perturbation theory