Controlling and Detecting Spin Correlations of Ultracold Atoms in Optical Lattices

Stefan Trotzky, Yu-Ao Chen, Ute Schnorrberger, Patrick Cheinet, and Immanuel Bloch
Phys. Rev. Lett. 105, 265303 – Published 29 December 2010
PDFHTMLExport Citation

Abstract

We report on the controlled creation of a valence bond state of delocalized effective-spin singlet and triplet dimers by means of a bichromatic optical superlattice. We demonstrate a coherent coupling between the singlet and triplet states and show how the superlattice can be employed to measure the singlet-fraction employing a spin-blockade effect. Our method provides a reliable way to detect and control nearest-neighbor spin correlations in many-body systems of ultracold atoms. Being able to measure these correlations is an important ingredient in studying quantum magnetism in optical lattices. We furthermore employ a SWAP operation between atoms which are part of different triplets, thus effectively increasing their bond-length. Such a SWAP operation provides an important step towards the massively parallel creation of a multiparticle entangled state in the lattice.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 13 September 2010

DOI:https://doi.org/10.1103/PhysRevLett.105.265303

© 2010 The American Physical Society

Authors & Affiliations

Stefan Trotzky1,2,3, Yu-Ao Chen1,2,3, Ute Schnorrberger1,2,3, Patrick Cheinet4, and Immanuel Bloch1,2,3

  • 1Fakultät für Physik, Ludwig-Maximilians-Universität, Schellingstrasse 4, 80798 München, Germany
  • 2Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, 85748 Garching, Germany
  • 3Institut für Physik, Johannes Gutenberg-Universität, Staudingerweg 7, 54099 Mainz, Germany
  • 4Laboratoire Charles Fabry, Institut d’Optique, Campus Polytechnique, RD 128, 91127 Palaiseau Cedex, France

Article Text (Subscription Required)

Click to Expand

Supplemental Material (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 105, Iss. 26 — 31 December 2010

Reuse & Permissions
Access Options
Collection
Heating up of Superconductors
January 27, 2017

This collection marks the 30th anniversary of the discovery of high-temperature superconductors. The papers selected highlight some of the advances that have been made to date, both in understanding why these compounds behave in the way they do, and in utilizing them in applications. The papers included in the collection have been made free to read.

APS and CERN Sign Open Access Agreement for SCOAP3

APS and CERN, the host organization of SCOAP3 (Sponsoring Consortium for Open Access Publishing in Particle Physics), have signed an agreement to make the high-energy physics (HEP) articles published in three leading APS journals open access beginning January 1, 2018. This agreement acts to support the publishing of open access content for wider benefit of the HEP community.

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×