Qu, ChunleiSun, KueiZhang, Chuanwei2015-09-022015-09-022015-052015-051050-2947http://hdl.handle.net/10735.1/4591The experimental realization of emergent spin-orbit coupling through laser-induced Raman transitions in ultracold atoms paves the way for exploring novel superfluid physics and simulating exotic many-body phenomena. A recent proposal with the use of Laguerre-Gaussian lasers enables another fundamental type of coupling between spin and orbital angular momentum (SOAM) in ultracold atoms. We hereby study quantum phases of a realistic Bose-Einstein condensate (BEC) with this synthetic SOAM coupling in a disk-shaped geometry, respecting radial inhomogeneity of the Raman coupling. We find that the experimental system naturally resides in a strongly interacting regime in which the phase diagram significantly deviates from the single-particle picture. The interplay between SOAM coupling and interaction leads to rich structures in spin-resolved position and momentum distributions, including a stripe phase and various types of immiscible states. Our results would provide a guide for an experimental investigation of SOAM-coupled BECs.©2015 American Physical SocietyOrbital angular momentumBose-Einstein condensationSpin angular momentumSpin-Orbit couplingRaman couplingArticleQu, Chunlei, Kuei Sun, and Chuanwei Zhang. 2015. "Quantum phases of Bose-Einstein condensates with synthetic spin-orbital-angular-momentum coupling." Physical Review A 91(5): 053630-053630.915