Controlled Flow of Spin-Entangled Electrons via Adiabatic Quantum Pumping

Details Controlled Flow of Spin-Entangled Electrons via Adiabatic Quantum Pumping Controlled Flow of Spin-Entangled Electrons via Adiabatic Quantum Pumping

2005-06-21

arxiv.org/abs/quant-ph/0506172v1

Phys. Rev. Lett. 97, 096602 (2006)

Physics

Quantum Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.97.096602

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 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, and discuss possible implementations and identify parameters that can be used to control the singlet flow.

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