title: Controlled flow of spin-entangled electrons via adiabatic quantum pumping.
abstract: We propose a method to dynamically generate and control the flow of spin-entangled electrons, each belonging to a spin singlet, by means of adiabatic quantum pumping. The pumping cycle functions by periodic time variation of localized two-body interactions. We develop a generalized approach to adiabatic quantum pumping as traditional methods based on a scattering matrix in one dimension cannot be applied here. We specifically compute the flow of spin-entangled electrons within a Hubbard-like model of quantum dots, discuss possible implementations, and identify parameters that can be used to control the singlet flow.
authors.affiliation: Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, USA.
authors.forename: Kunal K
authors.initials: KK
authors.lastname: Das
authors.forename: Sungjun
authors.initials: S
authors.lastname: Kim
authors.forename: Ari
authors.initials: A
authors.lastname: Mizel