Bose-Einstein Condensate in a Uniform Light-Induced Vector Potential

2008/09/17 by Y.-J. Lin, Y. -J. Lin, R. L. Compton +6 · 1 citation
Computer Science · Physics and Astronomy · #Atomic and Subatomic Physics Research #Atomic physics #Bose–Einstein condensate #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Ground state #Hamiltonian (control theory) #Magnetic field #Photon #Physics #Quantum Information and Cryptography #Quantum electrodynamics #Quantum mechanics #Vector potential #cond-mat.other

paper · pdf · doi:10.1103/physrevlett.102.130401

published as Phys.Rev.Lett.102:130401,2009 · 5 pages, submitted to Physical Review Letters

arxiv created 2008/09/17 · openalex publication_date 2009/03/30 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We use a two-photon dressing field to create an effective vector gauge potential for Bose-Einstein-condensed 87Rb atoms in the F=1 hyperfine ground state. These Raman-dressed states are spin and momentum superpositions, and we adiabatically load the atoms into the lowest energy dressed state. The effective Hamiltonian of these neutral atoms is like that of charged particles in a uniform magnetic vector potential whose magnitude is set by the strength and detuning of the Raman coupling. The spin and momentum decomposition of the dressed states reveals the strength of the effective vector potential, and our measurements agree quantitatively with a simple single-particle model. While the uniform effective vector potential described here corresponds to zero magnetic field, our technique can be extended to nonuniform vector potentials, giving nonzero effective magnetic fields.

Citations

• Anomalous Quantum Hall Effect: An Incompressible Quantum Fluid with Fractionally Charged Excitations
• Transition from a Strongly Interacting 1D Superfluid to a Mott Insulator
• Many-body physics with ultracold gases
• Two-Dimensional Magnetotransport in the Extreme Quantum Limit
• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• Periodically Dressed Bose-Einstein Condensate: A Superfluid with an Anisotropic and Variable Critical Velocity
• Fractional Quantum Hall States of Atoms in Optical Lattices
• Slow Light in Degenerate Fermi Gases
• Light-induced effective magnetic fields for ultracold atoms in planar geometries

Cited by

• Semimetal–superfluid quantum phase transitions in 2D and 3D lattices with Dirac points
• Imaginary gauge potentials in a non-Hermitian spin-orbit coupled quantum gas