Stuttgart 2012 – wissenschaftliches Programm
Q 31.2: Vortrag
Dienstag, 13. März 2012, 14:15–14:30, V7.01
Mapping the spatial distribution of entanglement in optical lattices — Emilio Alba1, •Géza Tóth2,3,4, and Juan José García-Ripoll1 — 1Instituto de Física Fundamental, CSIC, Calle Serrano 113b, Madrid E-28006, Spain — 2Theoretical Physics, The University of the Basque Country, E-48080 Bilbao, Spain — 3IKERBASQUE, Basque Foundation for Science, E-48011 Bilbao, Spain — 4Research Institute for Solid State Physics and Optics, H-1525 Budapest, Hungary
We study the entangled states that can be generated using two species of atoms trapped in independently movable, two-dimensional optical lattices. We show that using two sets of measurements it is possible to measure a set of entanglement witness operators distributed over arbitrarily large regions of the lattice, and use these witnesses to produce two-dimensional plots of the entanglement content of these states. We also discuss the influence of noise on the states and on the witnesses, as well as connections to ongoing experiments.
 E. Alba, G. Tóth, and J.J. García-Ripoll, Phys. Rev. A 82, 062321 (2010).