title: Validity of the single-particle approach for electron transport in quantum wires assisted by surface acoustic waves.
abstract: We study by means of time-dependent numerical simulations the quantum entanglement stemming from the Coulomb interaction between two electrons trapped in the minima of the piezoelectric potential generated by surface acoustic waves. We find that for particles captured in low-energy bound states the quantum correlations turn out to be negligible, thus validating a single-particle approach to the dynamics of such systems. At long times, for high-energy electrons, a substantial entanglement appears, which is an indicator of a mostly correlated dynamics.
authors.affiliation: ARCES, Alma Mater Studiorum, University of Bologna, Via Toffano 2/2, 40125 Bologna, Italy. S3 Research Center, CNR-INFM, Via Campi 213/A, I-Modena 41100, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Buscemi
authors.forename: P
authors.initials: P
authors.lastname: Bordone
authors.forename: A
authors.initials: A
authors.lastname: Bertoni