Angular spin-orbit coupling in cold atoms

Michael DeMarco and Han Pu
Phys. Rev. A 91, 033630 – Published 25 March 2015

Abstract

We propose coupling two internal atomic states using a pair of Raman beams operated in Laguerre-Gaussian laser modes with unequal phase windings. This generates a coupling between the atom's pseudospin and its orbital angular momentum. We analyze the single-particle properties of the system using realistic parameters and provide detailed studies of the spin texture of the ground state. Finally, we consider a weakly interacting atomic condensate subject to this angular spin-orbit coupling and show how the interatomic interactions modify the single-particle physics.

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  • Received 25 November 2014

DOI:https://doi.org/10.1103/PhysRevA.91.033630

©2015 American Physical Society

Authors & Affiliations

Michael DeMarco* and Han Pu

  • Department of Physics and Astronomy, and Rice Quantum Institute, Rice University, Houston, Texas 77251, USA

  • *Present address: Department of Applied Mathematics and Theoretical Physics, Wilberforce Road, University of Cambridge, Cambridge, CB3 0WA, United Kingdom.

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Vol. 91, Iss. 3 — March 2015

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