DeMarco, MichaelPu, Han2016-06-232016-06-232015DeMarco, Michael and Pu, Han. "Angular spin-orbit coupling in cold atoms." <i>Physical Review A,</i> 91, no. 3 (2015) American Physical Society: 033630. http://dx.doi.org/10.1103/PhysRevA.91.033630.https://hdl.handle.net/1911/90552We 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.engArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.Journal articlehttp://dx.doi.org/10.1103/PhysRevA.91.033630