Macroscopic Klein Tunneling in spin-orbit coupled Bose-Einstein Condensates

Abstract

We propose an experimental scheme to detect macroscopic Klein tunneling with spin-orbit coupled Bose-Einstein condensates (BECs). We show that a nonlinear Dirac equation with tunable parameters can be realized with such BECs. %in a simple configuration to generate the artificial spin-orbit coupling. Through numerical calculations, we demonstrate that macroscopic Klein tunneling can be clearly detected under realistic conditions. Macroscopic quantum coherence in such relativistic tunneling is clarified and a BEC with a negative energy is shown to be able to transmit transparently through a wide Gaussian potential barrier.

6 pages; 3 figures; Added detailed calculations; Published Version

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Cited by in corpus (24)

• Topological quantum matter with cold atoms
• Realization of 2D Spin-orbit Interaction and Exotic Topological Orders in Cold Atoms
• Josephson dynamics of a spin-orbit coupled Bose-Einstein condensate in a double well potential
• Emergent pseudospin-1 Maxwell fermions with a threefold degeneracy in optical lattices
• Ground state of spin-1 Bose-Einstein condensates with spin-orbit coupling in a Zeeman field
• Superfluid and magnetic states of an ultracold Bose gas with synthetic three-dimensional spin-orbit coupling in an optical lattice
• Dynamical generation of dark solitons in spin-orbit-coupled Bose-Einstein condensates
• Spin-orbit coupled Bose-Einstein condensates in a double well
• Simulation and measurement of the fractional particle number in one-dimensional optical lattices
• Spin-dependent Klein tunneling in polariton graphene with photonic spin-orbit interaction
• Particle number fractionalization of a one-dimensional atomic Fermi gas with synthetic spin-orbit coupling
• Realizing and detecting Stiefel-Whitney insulators in an optical Raman lattice
• Dynamics of spin-orbit-coupled cold atomic gases in a Floquet lattice with an impurity
• Synthetic non-Abelian topological charges in ultracold atomic gases
• Spin-orbit coupling induced separation and hidden spin textures in spin-1 Bose-Einstein condensates
• Perfect transmission at oblique incidence by trigonal warping in graphene P-N junctions
• Thermodynamics of spin-orbit-coupled Bose-Einstein condensates
• Synthetic spin-orbit coupling for the multispin models in optical lattices
• Spin-sensitive atom mirror via spin-orbit interaction
• Simulating the Klein tunneling of pseudospin-one Maxwell particles with trapped ions
• Coherent control of spin tunneling in a spin-orbit coupled bosonic triple well
• Perfect transmission of a Dirac particle in one-dimension double square barrier
• Landau Quantization for $\Lambda$-Type Neutral Atoms in an Homogeneous Spin-Dependent Gauge Potential
• Proposal for realizing and probing topological crystalline insulators in optical lattices