Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published September 15, 2011 | Published
Journal Article Open

Quantum magnetism with polar alkali-metal dimers

Abstract

We show that dipolar interactions between ultracold polar alkali-metal dimers in optical lattices can be used to realize a highly tunable generalization of the t-J model, which we refer to as the t-J-V-W model. The model features long-range spin-spin interactions J_z and J_⊥ of XXZ type, long-range density-density interaction V, and long-range density-spin interaction W, all of which can be controlled in both magnitude and sign independently of each other and of the tunneling t. The "spin" is encoded in the rotational degree of freedom of the molecules, while the interactions are controlled by applied static electric and continuous-wave microwave fields. Furthermore, we show that nuclear spins of the molecules can be used to implement an additional (orbital) degree of freedom that is coupled to the original rotational degree of freedom in a tunable way. The presented system is expected to exhibit exotic physics and to provide insights into strongly correlated phenomena in condensed-matter systems. Realistic experimental imperfections are discussed.

Additional Information

© 2011 American Physical Society. Received 11 June 2011; published 15 September 2011. We thank Jun Ye, Peter Zoller, Jesus Aldegunde, Paul Julienne, Goulven Quéméner, Bernhard Wunsch, Andrew Potter, Alejandro Muramatsu, Alexander Moreno, Matthias Troyer, Mehrtash Babadi, Peter Rabl, Andrew Daley, and Hendrik Weimer for discussions. This work was supported by NSF (PFC and Grants No. PHY-0803371, No. PHY05-51164, No.PIF-0904017, and No. DMR-07-05472), the Lee A. DuBridge Foundation, ARO with funding from the DARPA OLE program, Harvard-MIT CUA, AFOSR Quantum Simulation MURI, and AFOSR MURI on Ultracold Molecules.

Attached Files

Published - Gorshkov2011p15943Phys_Rev_A.pdf

Files

Gorshkov2011p15943Phys_Rev_A.pdf
Files (1.2 MB)
Name Size Download all
md5:c1d8b9f71833f27fdb0fd7308a8a6e8a
1.2 MB Preview Download

Additional details

Created:
August 19, 2023
Modified:
October 24, 2023