Currently there is a great deal of activities in studying the spin-orbit coupling (SOC) for
ultracold atoms. One of the challenges is to experimentally produce a two-dimensional (2D)
SOC of the Rashba type, as well as a 3D Weyl SOC for the center of mass motion of
ultracold atoms . In particular, the SOC can be generated by laser-dressing of atomic
internal states [1-3] or using a periodic sequence of magnetic gradient pulses [4,5]. In the
initial part of the talk these activities will be reviewed. Subsequently we shall discuss
another way of creating the 2D SOC using ultracold atoms confined in bilayer structures
[6,7]. An interplay between the inter-layer tunneling, intra-layer Raman coupling and intralayer
atom-atom interaction gives rise to an effective 2D SOC providing diverse groundstate
configurations for bilayer Bose-Einstein condensates (BEC)  and degenerate Fermi
1. N. Goldman, G. Juzeliūnas, P. Öhberg and I. B. Spielman, Rep. Prog. Phys. 77, 126401 (2014).
2. V. Galitski and I. B. Spielman, Nature 494, 49 (2013)
3. H. Zhai, Rep. Prog. Phys. 78, 026001(2015).
4. B. M. Anderson, I. B. Spielman, and G. Juzeliūnas, Phys. Rev. Lett. 111, 125301 (2013).
5. Z.-F. Xu, L. You, and M. Ueda, Phys. Rev. A 87, 063634 (2013).
6. S.-W. Su, S.-C. Gou, Q. Sun, L. Wen, W.-M. Liu, A.-C. Ji, J. Ruseckas, and G. Juzeliūnas, Phys.
Rev. A 93, 053630 (2016).
7. L.-L. Wang, Q. Sun, W.-M. Liu, G. Juzeliūnas and A.-C. Ji, Phys. Rev. A 95, 053628 (2017).
8. Q. Sun, L.-L. Wang, G. Juzeliūnas, A.-C. Ji, arXiv:1801.02639.
Cake Reception at 3:30 in Foothills