Fragmented superfluid due to frustration of cold atoms in optical lattices

Abstract

A one dimensional optical lattice is considered where a second dimension is encoded in the internal states of the atoms giving effective ladder systems. Frustration is introduced by an additional optical lattice that induces tunneling of superposed atomic states. The effects of frustration range from the stabilization of the Mott insulator phase with ferromagnetic order, to the breakdown of superfluidity and the formation of a macroscopically fragmented phase.

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References in corpus (9)

• A toolbox for lattice spin models with polar molecules
• DMRG and periodic boundary conditions: a quantum information perspective
• Spatial quantum noise interferometry in expanding ultracold atom clouds
• Implementation of Spin Hamiltonians in Optical Lattices
• Formation of spatial shell structures in the superfluid to Mott insulator transition
• Spin dynamics for bosons in an optical lattice
• Interacting Bose gases in quasi-one dimensional optical lattices
• Quantum dimer phases in a frustrated spin ladder: Effective field theory approach and exact diagonalization
• Search for quantum dimer phases and transitions in a frustrated spin ladder

Cited by in corpus (9)

• Journeys from Quantum Optics to Quantum Technology
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• Magnetic and nonmagnetic phases in doped AB2 t-J Hubbard chains
• Coupled two-component atomic gas in an optical lattice
• Coupling internal atomic states in a two-component Bose-Einstein condensate via an optical lattice: Extended Mott-superfluid transitions
• Non-invasive measurement of currents in analog quantum simulators