AI Article Synopsis
- The proposed scheme achieves spin-orbit coupling and the quantum spin Hall effect in neutral atoms using optical lattices, avoiding the need for near resonant lasers for spin state coupling.
- The motion of atoms is modified in a spin-dependent manner through laser recoil, while Zeeman shifts from magnetic field gradients provide spin selectivity.
- An alternative method involves creating a quantum spin Hall Hamiltonian using an all-optical approach with a period-tripling, spin-dependent superlattice.
Article Abstract
We propose a scheme which realizes spin-orbit coupling and the quantum spin Hall effect for neutral atoms in optical lattices without relying on near resonant laser light to couple different spin states. The spin-orbit coupling is created by modifying the motion of atoms in a spin-dependent way by laser recoil. The spin selectivity is provided by Zeeman shifts created with a magnetic field gradient. Alternatively, a quantum spin Hall Hamiltonian can be created by all-optical means using a period-tripling, spin-dependent superlattice.
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| http://dx.doi.org/10.1103/PhysRevLett.111.225301 | DOI Listing |
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