Thermal versus entanglement entropy : a measurement protocol for fermionic atoms with a quantum gas microscope
Pichler, Hannes and Bonnes, Lars and Daley, Andrew J and Läuchli, Andreas M and Zoller, Peter (2013) Thermal versus entanglement entropy : a measurement protocol for fermionic atoms with a quantum gas microscope. New Journal of Physics, 15. 063003. ISSN 1367-2630 (https://doi.org/10.1088/1367-2630/15/6/063003)
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Abstract
We show how to measure the order-two Renyi entropy of many-body states of spinful fermionic atoms in an optical lattice in equilibrium and non-equilibrium situations. The proposed scheme relies on the possibility to produce and couple two copies of the state under investigation, and to measure the occupation number in a site- and spin-resolved manner, e.g. with a quantum gas microscope. Such a protocol opens the possibility to measure entanglement and test a number of theoretical predictions, such as area laws and their corrections. As an illustration we discuss the interplay between thermal and entanglement entropy for a one dimensional Fermi-Hubbard model at finite temperature, and its possible measurement in an experiment using the present scheme.
ORCID iDs
Pichler, Hannes, Bonnes, Lars, Daley, Andrew J ORCID: https://orcid.org/0000-0001-9005-7761, Läuchli, Andreas M and Zoller, Peter;-
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Item type: Article ID code: 60702 Dates: DateEvent6 June 2013PublishedSubjects: Science > Physics Department: Faculty of Science > Physics Depositing user: Pure Administrator Date deposited: 17 May 2017 09:59 Last modified: 26 Oct 2024 10:28 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/60702