Spatial Coherence of a Strongly Interacting Bose Gas in the Trimerized Kagome Lattice

Abstract

We produce a trimerized kagome lattice for ultracold atoms using an optical superlattice formed by overlaying triangular lattices generated with two colors of light at a 2:1 wavelength ratio. Adjusting the depth of each lattice tunes the strong intra-trimer (J) and weak inter-trimer (J') tunneling energies, and also the on-site interaction energy U. Two different trimerization patterns are distinguished using matter-wave diffraction. We characterize the coherence of a strongly interacting Bose gas in this lattice, observing persistent nearest-neighbor spatial coherence in the large U/J' limit, and that such coherence displays asymmetry between the strongly and the weakly coupled bonds.

References in corpus (24)

• Time-resolved Observation and Control of Superexchange Interactions with Ultracold Atoms in Optical Lattices
• Bose-Einstein condensation in quasi2D trapped gases
• Ultracold Atoms in a Tunable Optical Kagome Lattice
• The Mott insulator transition in two dimensions
• Short-range quantum magnetism of ultracold fermions in an optical lattice
• Gapless spin-liquid ground state in the $S=1/2$ kagome antiferromagnet
• Coherent driving and freezing of bosonic matter wave in an optical Lieb lattice
• Low-energy sector of the S=1/2 Kagome antiferromagnet
• Ultracold quantum gases in triangular optical lattices
• Atomic quantum gases in Kagomé lattices
• Phase coherence of an atomic Mott insulator
• Observation of Four-body Ring-exchange Interactions and Anyonic Fractional Statistics
• Vanishing spin gap in a competing spin-liquid phase in the kagome Heisenberg antiferromagnet
• RVB description of the low-energy singlets of the spin 1/2 kagome antiferromagnet
• Expansion of a quantum gas released from an optical lattice
• Experimental realization of plaquette resonating valence bond states with ultracold atoms in optical superlattices
• Quantum gases in trimerized kagomé lattices
• Ab initio derivation of Hubbard models for cold atoms in optical lattices
• Nature of the spin liquid ground state in a breathing kagome compound studied by NMR and series expansion
• Atomic Fermi gas in the trimerized Kagomé lattice at the filling 2/3
• Fractional-filling Mott domains in two dimensional optical superlattices
• Mean-field scaling of the superfluid to Mott insulator transition in a 2D optical superlattice
• Dimerized Mott insulators in hexagonal optical lattices
• Signatures of spatial inversion asymmetry of an optical lattice observed in matter-wave diffraction

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• Coexistence of ergodic and non-ergodic behavior and level spacing statistics in a one-dimensional model of a flat band superconductor
• A phase microscope for quantum gases
• The influence of sublattice bias on superfluid to Mott insulator transitions
• Breathing kagome XY quantum magnet with four-site ring exchange