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Proceedings Paper

Analysis of leakage and quantum entanglement for acoustic spintronics
Author(s): Godfrey A. Gumbs; Yonatan Abranyos
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Paper Abstract

We investigate the entanglement of spins for two electrons contributing to the acoustoelectric current driven by a surface acoustic wave (SAW) in two adjacent narrow channels by calculating their exchange energy (J). Our calculations are done in the s wave Heitler-London approach, as well as by taking the difference between the energies of the singlet and triplet states which we obtain by solving the Schrodinger equation in the adiabatic approximation. We also calculate the leakage of the electrons from the lowest states in which they are prepared to excited states within the moving quantum dots. The leakage from the ground state is also calculated when an electron is launched in a channel which is then split into two adjacent channels by gates.

Paper Details

Date Published: 24 August 2004
PDF: 8 pages
Proc. SPIE 5436, Quantum Information and Computation II, (24 August 2004); doi: 10.1117/12.542784
Show Author Affiliations
Godfrey A. Gumbs, CUNY/Hunter College (United States)
CUNY/Graduate Ctr. (United States)
Yonatan Abranyos, CUNY/Graduate Ctr. (United States)

Published in SPIE Proceedings Vol. 5436:
Quantum Information and Computation II
Eric Donkor; Andrew R. Pirich; Howard E. Brandt, Editor(s)

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