Artificial magnetic field induced by an evanescent wave

Abstract

Cold atomic gases are perfect laboratories for realization of quantum simulators. In order to simulate solid state systems in the presence of magnetic fields special effort has to be made because atoms are charge neutral. There are different methods for realization of artificial magnetic fields, that is the creation of specific conditions so that the motion of neutral particles mimics the dynamics of charged particles in an effective magnetic field. Here, we consider adiabatic motion of atoms in the presence of an evanescent wave. Theoretical description of the adiabatic motion involves artificial vector and scalar potentials related to the Berry phases. Due to the large gradient of the evanescent field amplitude, the potentials can be strong enough to induce measurable effects in cold atomic gases. We show that the resulting artificial magnetic field is able to induce vortices in a Bose-Einstein condensate trapped close to a surface of a prism where the evanescent wave is created. We also analyze motion of an atomic cloud released from a magneto-optical trap that falls down on the surface of the prism. The artificial magnetic field is able to reflect falling atoms that can be observed experimentally.

19 pages, 7 figures

References in corpus (12)

• Many-Body Physics with Ultracold Gases
• Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
• Light-induced gauge fields for ultracold atoms
• Spin-orbit coupling in quantum gases
• Spin-Injection Spectroscopy of a Spin-Orbit Coupled Fermi Gas
• An atomic clock with $10^{-18}$ instability
• Cold Atom Physics Using Ultra-Thin Optical Fibers: Light-Induced Dipole Forces and Surface Interactions
• Spin-Orbit Coupling Induced Coherent Production of Feshbach Molecules in a Degenerate Fermi Gas
• Geometric potentials in quantum optics: A semi-classical interpretation
• State-dependent potentials in a nanofiber-based two-color trap for cold atoms
• Stability of Excited Dressed States with Spin-Orbit Coupling
• Simulation of non-Abelian lattice gauge fields with a single component gas

Cited by in corpus (6)

• Chiral Quantum Optics
• Symmetry breaking in binary Bose-Einstein condensates in the presence of an inhomogeneous artificial gauge field
• Controlled creation of three-dimensional vortex structures in Bose--Einstein condensates using artificial magnetic fields
• Creating superfluid vortex rings in artificial magnetic fields
• Formation of local and global currents in a toroidal Bose--Einstein condensate via an inhomogeneous artificial gauge field
• Generation, manipulation and detection of snake state trajectories of a neutral atom in a ring-cavity