Orbital-driven melting of a bosonic Mott insulator in a shaken optical lattice

Abstract

In order to study the interplay between localized and dispersive orbital states in a system of ultracold atoms in an optical lattice, we investigate the possibility to coherently couple the lowest two Bloch bands by means of resonant periodic forcing. Considering bosons in one dimension, it is shown that a strongly interacting Floquet system can be realized, where at every lattice site two (and only two) near-degenerate orbital states are relevant. By smoothly tuning both states into resonance we find that the system can undergo an orbital-driven Mott-insulator-to-superfluid transition. As an intriguing consequence of the kinetic frustration in the system, this transition can be either continuous or first-order, depending on parameters such as lattice depth and filling.

7 pages, 3 figures

References in corpus (24)

• Many-Body Physics with Ultracold Gases
• Heavy Fermions and Quantum Phase Transitions
• Orbital superfluidity in the $P$-band of a bipartite optical square lattice
• Imaging the Mott Insulator Shells using Atomic Clock Shifts
• State preparation and dynamics of ultracold atoms in higher lattice orbitals
• Topological orbital ladders
• Orbital analogue of quantum anomalous Hall effect in $p$-band systems
• Role of interactions in 87Rb-40K Bose-Fermi mixtures in a 3d optical lattice
• Orbital ordering and frustration of $p$-band Mott-insulators
• Strong coupling theory of the spinless charges on the triangular lattices: possibility of a new quantum liquid
• Prediction of quantum stripe ordering in optical lattices
• Self-Trapping of Bosons and Fermions in Optical Lattices
• Stability of a Floquet Bose-Einstein condensate in a one-dimensional optical lattice
• Observation of Density-Induced Tunneling
• AC-induced superfluidity
• Bose-Hubbard model with occupation dependent parameters
• Avoided level crossing spectroscopy with dressed matter waves
• Shaping topological properties of the band structures in a shaken optical lattice
• Generalized acceleration theorem for spatiotemporal Bloch waves
• Strong Interaction Effects in Superfluid Ising Quantum Phase Transition
• Ultracold fermions in a one-dimensional bipartite optical lattice: metal-insulator transitions driven by shaking
• Spontaneous time-reversal symmetry breaking for spinless fermions on a triangular lattice
• Fast initialization of a high-fidelity quantum register using optical superlattices
• ac Stark shift and multiphoton-like resonances in low-frequency driven optical lattices

Cited by in corpus (13)

• Atomic quantum gases in periodically driven optical lattices
• Non-standard Hubbard models in optical lattices: a review
• At the limits of criticality-based quantum metrology: apparent super-Heisenberg scaling revisited
• Physics of higher orbital bands in optical lattices: a review
• Multiphoton interband excitations of quantum gases in driven optical lattices
• Realizing discontinuous quantum phase transitions in a strongly-correlated driven optical lattice
• Shaken not stirred: Creating exotic angular momentum states by shaking an optical lattice
• Resonant quantum dynamics of few ultracold bosons in periodically driven finite lattices
• Multiband and array effects in matter-wave-based waveguide QED
• Floquet-heating-induced Bose condensation in a scar-like mode of an open driven optical-lattice system
• Single atom edge-like states via quantum interference
• Selective population of a large-angular-momentum state in an optical lattice
• $p$-band stability of ultracold atom gas in anharmonic optical lattice potential with large energy scales