caa a22 4500 44536646X CHVBK 20180317142932.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s10909-011-0403-8 doi (NATIONALLICENCE)springer-10.1007/s10909-011-0403-8 Detection of Entanglement in Ultracold Lattice Gases [Elektronische Daten] [G. De Chiara, A. Sanpera] Probing non trivial magnetic ordering in quantum magnets realized with ultracold lattice gases demands detection methods with some spatial resolution built on it. Here we demonstrate that the Faraday matter-light interface provides an experimentally feasible tool to distinguish indubitably different quantum phases of a given many-body system in a non-demolishing way. We illustrate our approach by focussing on the Heisenberg chain for spin-1 bosons in the presence of a SU(2) symmetry breaking field. We explain how using the light signal obtained via homodyne detection one can reconstruct the phase diagram of the model. Further we show that the very same technique that provides a direct experimentally measurable signal of different order parameters can be extended to detect also the presence of multipartite entanglement in such systems. Springer Science+Business Media, LLC, 2011 Optical lattices nationallicence Entanglement nationallicence De Chiara G. Departament de Física, Informació i Processos Quàntics, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain aut Sanpera A. Departament de Física, Informació i Processos Quàntics, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain aut Journal of Low Temperature Physics Springer US; http://www.springer-ny.com 165/5-6(2011-12-01), 292-305 0022-2291 165:5-6<292 2011 165 10909 https://doi.org/10.1007/s10909-011-0403-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10909-011-0403-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- De Chiara G. Departament de Física, Informació i Processos Quàntics, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain aut NATIONALLICENCE 700 1- Sanpera A. Departament de Física, Informació i Processos Quàntics, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain aut NATIONALLICENCE 773 0- Journal of Low Temperature Physics Springer US; http://www.springer-ny.com 165/5-6(2011-12-01), 292-305 0022-2291 165:5-6<292 2011 165 10909 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer