Control of bound-pair transport by periodic driving

Abstract

We investigate the effect of periodic driving by an external field on systems with attractive pairing interactions. These include spin systems (like the ferromagnetic XXZ model) as well as ultracold fermionic atoms described by the attractive Hubbard model. We show that a well-known phenomenon seen in periodically driven systems--the renormalization of the exchange coupling strength--acts selectively on bound-pairs of spins/atoms, relative to magnon/bare atom states. Thus one can control the direction and speed of transport of bound-pair relative to magnon/unpaired atom states, and thus coherently achieve spatial separation of these components. Applications to recent experiments on transport with fermionic atoms in optical lattices which consist of mixtures of bound-pairs and bare atoms are discussed.

6 pages, 3 figures

References in corpus (10)

• Dynamical control of matter-wave tunneling in periodic potentials
• Superfluid-insulator transition in a periodically driven optical lattice
• Evidence for Superfluidity of Ultracold Fermions in an Optical Lattice
• Single Particle Tunneling in Strongly Driven Double Well Potentials
• Quantum transport through a Tonks-Girardeau gas
• Exploring dynamic localization with a Bose-Einstein condensate
• Interaction-controlled transport of an ultracold Fermi gas
• Coherent destruction of tunneling, dynamic localization and the Landau-Zener formula
• Tuning the Mott transition in a Bose-Einstein condensate by multi-photon absorption
• Engineering correlation and entanglement dynamics in spin systems

Cited by in corpus (23)

• Effective Hamiltonians for fastly driven many-body lattice systems
• Periodically-driven cold atoms: the role of the phase
• Slow quench dynamics of periodically driven quantum gases
• Kilohertz-driven Bose-Einstein condensates in optical lattices
• Transport of Quantum Correlations across a spin chain
• Generalized acceleration theorem for spatiotemporal Bloch waves
• Coherent perfect absorbers for transient, periodic or chaotic optical fields: time-reversed lasers beyond threshold
• Floquet-engineered pair and single particle filter in the Fermi Hubbard model
• Effective Hamiltonians for fastly driven tight-binding chains
• Controlled wave-packet manipulation with driven optical lattices
• Sudden death of particle-pair Bloch oscillation and unidirectional propagation in a one-dimensional driven optical lattice
• Energetically constrained co-tunneling of cold atoms
• Fractional photon-assisted tunneling in an optical superlattice: large contribution to particle transfer
• Spatial two-particle NOON-states in periodically shaken three-well potentials
• Low-energy doublons in the ac-driven two-species Hubbard model
• Momentum resolved Floquet-engineered pair and single particle filter in the Fermi Hubbard model
• Fractional photon-assisted tunnelling of ultra-cold atoms in periodically shaken double-well lattices
• Klein tunneling of two correlated bosons
• Quantum entanglement and drifting generated by an AC field resonant with frequency-doubled Bloch oscillations of correlated particles
• Directed transport in a classical lattice with a high-frequency driving
• Decay rates and energies of free magnons and bound states in dissipative XXZ chains
• Two-doublon Bloch oscillations in the mass-imbalanced extended Fermi-Hubbard model
• Continued fraction analysis of dressed systems: application to periodically driven optical lattices