HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Controlling and Detecting Spin Correlations of Ultracold atoms in Optical Lattices

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.
Document type :
Journal articles
Complete list of metadata

Cited literature [13 references]  Display  Hide  Download

Contributor : Marie-Laure Edwards Connect in order to contact the contributor
Submitted on : Monday, December 7, 2015 - 11:31:33 AM
Last modification on : Friday, May 20, 2022 - 3:41:45 AM
Long-term archiving on: : Tuesday, March 8, 2016 - 12:22:14 PM


Publisher files allowed on an open archive



Stefan Trotzky, Yu-Ao Chen, Ute Schnorrberger, Patrick Cheinet, Immanuel Bloch. Controlling and Detecting Spin Correlations of Ultracold atoms in Optical Lattices. Physical Review Letters, American Physical Society, 2010, 10 (26), pp.265303. ⟨10.1103/PhysRevLett.105.265303⟩. ⟨hal-00746816⟩



Record views


Files downloads