Stuttgart 2012 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 31: Quanteninformation: Konzepte und Methoden 4

Q 31.2: Vortrag

Dienstag, 13. März 2012, 14:15–14:30, V7.01

Mapping the spatial distribution of entanglement in optical latticesEmilio Alba1, •Géza Tóth2,3,4, and Juan José García-Ripoll11Instituto 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.

[1] E. Alba, G. Tóth, and J.J. García-Ripoll, Phys. Rev. A 82, 062321 (2010).

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