Enlarging and cooling the Néel state in an optical lattice
arXiv:1204.0018 · doi:10.1103/PhysRevA.86.023606
Abstract
We propose an experimental scheme to favor both the realization and the detection of the Néel state in a two-component gas of ultracold fermions in a three-dimensional simple-cubic optical lattice. By adding three compensating Gaussian laser beams to the standard three pairs of retroreflected lattice beams, and adjusting the relative waists and intensities of the beams, one can significantly enhance the size of the Néel state in the trap, thus increasing the signal of optical Bragg scattering. Furthermore, the additional beams provide for adjustment of the local chemical potential and the possibility to evaporatively cool the gas while in the lattice. Our proposals are relevant to other attempts to realize many-body quantum phases in optical lattices.
arXiv comment8 pages, 10 figures (significantly revised text and figures)
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- Phase Winding a Two-Component BEC in an Elongated Trap: Experimental Observation of Moving Magnetic Orders and Dark-bright Solitons
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- Minimizing nonadiabaticities in optical-lattice loading
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- Interaction-driven Lifshitz transition with dipolar fermions in optical lattices
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- Unconventional superfluidity in quasi-one-dimensional systems
- Dissipative cooling of spin chains by a bath of dipolar particles
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- Sudden and slow quenches into the antiferromagnetic phase of ultracold fermions
- Interaction-Induced Gradients Across a Confined Fermion Lattice
- Density redistribution effects in fermionic optical lattices
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- Quantum simulation of the Hubbard model with ultracold fermions in optical lattices