CaltechAUTHORS
  A Caltech Library Service

Topological phases in ultracold polar-molecule quantum magnets

Manmana, Salvatore R. and Stoudenmire, E. M. and Hazzard, Kaden R. A. and Rey, Ana Maria and Gorshkov, Alexey V. (2013) Topological phases in ultracold polar-molecule quantum magnets. Physical Review B, 87 (8). Art. No. 081106. ISSN 1098-0121. http://resolver.caltech.edu/CaltechAUTHORS:20130328-152800028

[img]
Preview
PDF - Published Version
See Usage Policy.

739Kb
[img]
Preview
PDF - Submitted Version
See Usage Policy.

2138Kb
[img] Plain Text - Supplemental Material
See Usage Policy.

706b
[img]
Preview
PDF - Supplemental Material
See Usage Policy.

381Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20130328-152800028

Abstract

We show how to use polar molecules in an optical lattice to engineer quantum spin models with arbitrary spin S≥1/2 and with interactions featuring a direction-dependent spin anisotropy. This is achieved by encoding the effective spin degrees of freedom in microwave-dressed rotational states of the molecules and by coupling the spins through dipolar interactions. We demonstrate how one of the experimentally most accessible anisotropies stabilizes symmetry protected topological phases in spin ladders. Using the numerically exact density matrix renormalization group method, we find that these interacting phases—previously studied only in the nearest-neighbor case—survive in the presence of long-range dipolar interactions. We also show how to use our approach to realize the bilinear-biquadratic spin-1 and the Kitaev honeycomb models. Experimental detection schemes and imperfections are discussed.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevB.87.081106DOIUNSPECIFIED
http://link.aps.org/doi/10.1103/PhysRevB.87.081106PublisherUNSPECIFIED
http://arxiv.org/abs/1210.5518v2arXivUNSPECIFIED
Additional Information:© 2013 American Physical Society. Received 19 October 2012; published 26 February 2013. We thank J. Preskill, J. Ye, D. Jin, M. Lukin, N. Yao, S. Michalakis, A. Turner, N. Schuch, N. Lindner, G. Evenbly, M. Baranov, J. Taylor, S. Stellmer,W. Campbell, M. Foss-Feig, M. Hermele, V. Gurarie, X.-G. Wen, Z.-X. Liu, and M. Oshikawa for discussions. This work was supported by NSF, IQIM, NRC, AFOSR, ARO, the ARO-DARPA-OLE program, and the Lee A. DuBridge and Gordon and Betty Moore foundations. S.R.M. and K.R.A.H. thank KITP for hospitality. We acknowledge the use of the Janus supercomputer facilities at CU Boulder. This manuscript is the contribution of NIST and is not subject to U.S. copyright.
Group:IQIM, Institute for Quantum Information and Matter
Funders:
Funding AgencyGrant Number
NSFUNSPECIFIED
Institute for Quantum Information and Matter (IQIM)UNSPECIFIED
NRCUNSPECIFIED
Air Force Office of Scientific Research (AFOSR)UNSPECIFIED
Army Research Office (ARO)UNSPECIFIED
ARO-DARPA-OLE ProgramUNSPECIFIED
Lee A. DuBridge FoundationUNSPECIFIED
Gordon and Betty Moore FoundationUNSPECIFIED
Classification Code:PACS: 67.85.-d, 33.80.-b, 75.10.Jm, 75.10.Pq
Record Number:CaltechAUTHORS:20130328-152800028
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20130328-152800028
Official Citation:Manmana, S. R., E. M. Stoudenmire, et al. (2013). "Topological phases in ultracold polar-molecule quantum magnets." Physical Review B 87(8): 081106.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:37680
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:15 Apr 2013 21:23
Last Modified:15 Apr 2013 21:23

Repository Staff Only: item control page