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Published January 2015 | Published + Submitted
Journal Article Open

Detecting two-site spin-entanglement in many-body systems with local particle-number fluctuations


We derive experimentally measurable lower bounds for the two-site entanglement of the spin-degrees of freedom of many-body systems with local particle-number fluctuations. Our method aims at enabling the spatially resolved detection of spin-entanglement in Hubbard systems using high-resolution imaging in optical lattices. A possible application is the observation of entanglement generation and spreading during spin impurity dynamics, for which we provide numerical simulations. More generally, the scheme can simplify the entanglement detection in ion chains, Rydberg atoms, or similar atomic systems.

Additional Information

© 2015 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. For paper published after November 2012, authors, their institutions and third parties all have the same rights to reuse articles published in New Journal of Physics in accordance with the Creative Commons Attribution 3.0 Unported (CC-BY) license. This allows the articles to be shared, adapted and made commercial use of, subject to appropriate attribution. Please check the licence for full licence terms and attribution requirements. Received 10 September 2014. Accepted 27 November 2014. Published 9 January 2015. We acknowledge indispensable discussions with T. Fukuhara, C. Gross, I. Bloch, and G. Giedke. This work was supported by EU(IP-SIQS), by Italian MIUR via PRIN Project 2010LLKJBX and via FIRB Project RBFR12NLNA, and by Regione Toscana POR FSE 2007-2013.

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Submitted - 1408.4672v1.pdf

Published - NJP_17_1_013015.pdf


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August 20, 2023
August 20, 2023