Realistic Rashba and Dresselhaus spin-orbit coupling for neutral atoms

By D. Campbell, G. Juzeliūnas, Ian B. Spielman. 2011

169 citations recorded by the source corpus.

We describe a new class of atom-laser coupling schemes which lead to spin-orbit-coupled Hamiltonians for ultracold neutral atoms. By properly setting the optical phases, a pair of degenerate pseudospin (a linear combination of internal atomic) states emerge as the lowest-energy eigenstates in the spectrum and are thus immune to collisionally induced decay. These schemes use N cyclically coupled ground or metastable internal states. We focus on two situations: a three-level case and a four-level case, where the latter adds a controllable Dresselhaus contribution. We describe an implementation of the four-level scheme for {sup 87}Rb and analyze its sensitivity to typical laboratory noise sources. Last, we argue that the Rashba Hamiltonian applies only in the large intensity limit since any laser coupling scheme will produce terms nonlinear in momentum that decline with intensity.

Subfields: Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/5f576993c61b53a38af3d8b3db4a7845d053971d

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In Atomic and Molecular Physics, and Optics

Citations in the corpus

Colloquium: Artificial gauge potentials for neutral atoms (2010, background): “To overcome this difficulty, a scheme involving N ground or metastable internal states cyclically coupled by laser fields was recently proposed (Campbell et al., 2011).”
Anomalous edge states and the bulk-edge correspondence for periodically-driven two dimensional systems (2012, methodology): “For cold atoms, various methods have been proposed for creating ‘‘synthetic gauge fields,’’ which mimic the effects of magnetic fields [7–9] or spin-orbit coupling [10,11] for neutral atoms.”
Artificial gauge fields in materials and engineered systems (2017, unknown): “requires implementing more complex laser configurations, as proposed in [348,349,350,351] and realized with ultracold Fermi gases [352,353] and Bose-Einstein condensates [354].”
(INVITED) Vortex solitons: Old results and new perspectives (2019, methodology): “The experimental implementation of the pseudo-SOC was proposed [203] and realized in the condensate of (87)Rb atoms, using appropriately designed laser illumination and magnetic fields [204–207].”