Transport behaviors of BEC in synthetic spin-orbit and gauge fields

POSTER

Abstract

We experimentally study transport of Bose Einstein Condensates (BECs) with synthetic gauge fields and spin-orbit coupling (SOC), created by counter propagating Raman lasers which couple hyperfine spin and momentum states of $^{87}Rb$ and generate a synthetic dressed bandstructure modifying atoms' kinetic energy-momentum dispersion. We have developed various techniques to actuate and control the transport with synthetic electric fields and spin-dependent fields, as well as by gravity (the direction of our spin-momentum coupling) and far off resonance lasers. We study the time evolution of the momentum, spin and density (measured after time-of-flight) of BEC during transport in the dressed bands, both with and without the optical trap.

Authors

  • Robert Niffenegger

    • Department of Physics, Purdue University, West Lafayette, IN 47906, USA
    • Department of Physics, Purdue University, West Lafayette, IN
    • Purdue University

  • Chuan-Hsun Li

    • Purdue University

  • Abraham Olson

    • Purdue University

  • Yong P. Chen

    • Purdue University
    • Department of Physics, Purdue University, West Lafayette, IN 47906, USA
    • Department of Physics, Purdue University, West Lafayette, IN
    • Purdue University, West Lafayette, IN 47907, U.S.A.