Rashba and Weyl spin-orbit coupling in an optical lattice clock

Abstract

Recent experimental realization of one-dimensional (1D) spin-orbit coupling (SOC) for ultracold alkaline-earth(-like) atoms in optical lattice clocks opens a new avenue for exploring exotic quantum matter because of the strongly suppressed heating of atoms from lasers comparing with alkaline atoms. Here we propose a scheme to realize two-dimensional (2D) Rashba and three-dimensional (3D) Weyl types of SOC in a 3D optical lattice clock and explore their topological phases. With 3D Weyl SOC, the system can support topological phases with various numbers as well as types (I or II) of Weyl points. The spin textures of such topological bands for 2D Rashba and 3D Weyl SOC can be detected using suitably designed spectroscopic sequences. Our proposal may pave the way for the experimental realization of robust topological quantum matters and their exotic quasiparticle excitations in ultracold atomic gases.

arXiv comment9 pages, 7 figures

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• Floquet generation of Second Order Topological Superconductor
• Topological Gapless Matters in Three-dimensional Ultracold Atomic Gases
• Eight fold quantum Hall phases in a time reversal symmetry broken tight binding model
• Phase diagram, band structure and density of states in two-dimensional attractive Fermi-Hubbard model with Rashba spin-orbit coupling
• Topological optical Raman superlattices
• A universal pairing gap measurement proposal by dynamical excitations in 2D doped attractive Fermi-Hubbard model with spin-orbit coupling
• Robust Weyl points in a 1D superlattice with transverse spin-orbit coupling
• Extended Haldane model -- a modern gateway to topological insulators