Controlled Flow of Spin-Entangled Electrons via Adiabatic Quantum Pumping
arXiv:quant-ph/0506172 · doi:10.1103/PhysRevLett.97.096602
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 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.
4 pages, 3 figures
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- Optimal spin-entangled electron-hole pair pump
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