Photon-assisted tunneling in a biased strongly correlated bose gas

Ruichao Ma, M. Eric Tai, Philipp M. Preiss, Waseem S. Bakr, Jonathan Simon, Markus Greiner

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97 Scopus citations

Abstract

We study the impact of coherently generated lattice photons on an atomic Mott insulator subjected to a uniform force. Analogous to an array of tunnel-coupled and biased quantum dots, we observe sharp, interaction-shifted photon-assisted tunneling resonances corresponding to tunneling one and two lattice sites either with or against the force and resolve multiorbital shifts of these resonances. By driving a Landau-Zener sweep across such a resonance, we realize a quantum phase transition between a paramagnet and an antiferromagnet and observe quench dynamics when the system is tuned to the critical point. Direct extensions will produce gauge fields and site-resolved spin flips, for topological physics and quantum computing.

Original languageEnglish (US)
Article number095301
JournalPhysical review letters
Volume107
Issue number9
DOIs
StatePublished - Aug 23 2011

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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