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Proceedings Paper

Utilising the Aharonov-Bohm effect in quantum device design
Author(s): Keith J. Kasunic
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Paper Abstract

The Aharonov-Bohm effect – where electron-interference fringe positions are shifted based on the presence of a non-local magnetic field – has not yet been utilised to its full potential in quantum device design. In this paper, we show that the de Broglie wavelength of the electron is changed locally by its interaction with the magnetic vector potential. The vector potential thus acts as a quantum “phase plate”, changing the phase difference between interfering electron wavefunctions in a non-dispersive, gauge-invariant manner. This model is then shown to be applicable to the design and optimisation of phase-dependent quantum devices such as superconducting quantum interference devices (SQUIDs), quantum sensors, and so on.

Paper Details

Date Published: 3 September 2019
PDF: 13 pages
Proc. SPIE 11091, Quantum Nanophotonic Materials, Devices, and Systems 2019, 110910M (3 September 2019); doi: 10.1117/12.2528320
Show Author Affiliations
Keith J. Kasunic, Optical Systems Group, LLC (United States)
Univ. of North Carolina, Charlotte (United States)

Published in SPIE Proceedings Vol. 11091:
Quantum Nanophotonic Materials, Devices, and Systems 2019
Cesare Soci; Matthew T. Sheldon; Mario Agio, Editor(s)

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