Detecting antiferromagnetism of atoms in an optical lattice via optical Bragg scattering

Corcovilos, Theodore A.; Baur, Stefan K.; Hitchcock, J.; Mueller, Erich J.; Hulet, Randall G.

doi:10.1103/physreva.81.013415

Cited by 94 publications

(107 citation statements)

References 42 publications

(67 reference statements)

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“…For instance, at t = λ = 0.02U (see Fig. 6), the FM order would be robust when a temperature is below the excitation gap ∆ 2 l ≈ t/3 and is expected to be detectable via Bragg scattering of light 49 .…”

Section: E Discussionmentioning

confidence: 99%

Ferromagnetism in a two-component Bose-Hubbard model with synthetic spin-orbit coupling

Zhao

Hu²,

Chang

et al. 2014

Phys. Rev. A

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We study the effect of the synthetic spin-orbit coupling in a two-component Bose-Hubbard model in one dimension by employing the density-matrix renormalization group method. A ferromagnetic long-range order emerges in both Mott insulator and superfluid phases resulting from the spontaneous breaking of the Z2 symmetry, when the spin-orbit coupling term becomes comparable to the hopping kinetic energy and the intercomponent interaction is smaller than the intracomponent as well. This effect is expected to be detectable with the present realization of the synthetic spin-orbit coupling in experiments.

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Section: E Discussionmentioning

confidence: 99%

Ferromagnetism in a two-component Bose-Hubbard model with synthetic spin-orbit coupling

Zhao

Hu²,

Chang

et al. 2014

Phys. Rev. A

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“…This order can be observed using light scattering [42] or through single-site imaging of the fermions. Unfortunately the transition temperature for this spontaneous symmetry breaking is T c ∼ 10 −2 e 2 [6,43].…”

Section: Spontaneous Symmetry Breakingmentioning

confidence: 99%

Optical-lattice Hamiltonians for relativistic quantum electrodynamics

Kapit

Mueller

2011

Phys. Rev. A

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We show how interpenetrating optical lattices containing Bose-Fermi mixtures can be constructed to emulate the thermodynamics of quantum electrodynamics (QED). We present models of neutral atoms on lattices in 1+1, 2+1 and 3+1 dimensions whose low energy effective action reduces to that of photons coupled to Dirac fermions of the corresponding dimensionality. We give special attention to 2+1 dimensional electrodynamics (QED3) and discuss how two of its most interesting features, chiral symmetry breaking and Chern-Simons physics, could be observed experimentally.

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“…The standard time-of-flight imaging measurement can reveal the condensate peaks at the nontrivial momentum points [26], which provides direct signatures of the two superfluidity states. The different magnetic orders presented above can be detected by the optical Bragg scattering for atoms in OLs [54], as the peaks in the Bragg spectroscopy directly reveal their spin structure factors. Another way to measure the spin configurations is using the spin-resolved in-situ imaging technique [55].…”

Section: Discussionmentioning

confidence: 99%

Superfluid and magnetic states of an ultracold Bose gas with synthetic three-dimensional spin-orbit coupling in an optical lattice

et al. 2013

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We study ultracold bosonic atoms with the synthetic three-dimensional spin-orbit (SO) coupling in a cubic optical lattice. In the superfluidity phase, the lowest energy band exhibits one, two or four pairs of degenerate single-particle ground states depending on the SO-coupling strengths, which can give rise to the condensate states with spin-stripes for the weak atomic interactions. In the deep Mott-insulator regime, the effective spin Hamiltonian of the system combines three-dimensional Heisenberg exchange interactions, anisotropy interactions, and Dzyaloshinskii-Moriya interactions. Based on Monte Carlo simulations, we numerically demonstrate that the resulting Hamiltonian with an additional Zeeman field has a rich phase diagram with spiral, stripe, vortex crystal, and especially Skyrmion crystal spin-textures in each xy-plane layer. The obtained Skyrmion crystals can be tunable with square and hexagonal symmetries in a columnar manner along the z axis, and moreover are stable against the inter-layer spin-spin interactions in a large parameter region.

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Detecting antiferromagnetism of atoms in an optical lattice via optical Bragg scattering

Cited by 94 publications

References 42 publications

Ferromagnetism in a two-component Bose-Hubbard model with synthetic spin-orbit coupling

Ferromagnetism in a two-component Bose-Hubbard model with synthetic spin-orbit coupling

Optical-lattice Hamiltonians for relativistic quantum electrodynamics

Superfluid and magnetic states of an ultracold Bose gas with synthetic three-dimensional spin-orbit coupling in an optical lattice

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