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Dynamics of one-dimensional tight-binding models with arbitrary time-dependent external homogeneous fields

Dynamics of one-dimensional tight-binding models with arbitrary time-dependent external... We study the dynamics of one dimensional tight-binding model with arbitrary time-dependent external fields in a rigorous manner. The exact propagators of systems with homogeneous electric and magnetic fields are presented by following the path-integral method. The phenomena of Bloch and super Bloch oscillations are revisited in the framework of propagator theory. It is shown that the Bloch acceleration theorem can be generalized to the impulse-momentum theorem in a quantum version, which provides new tools for quantum state control. As an application, the stopping and accelerating of a wave packet can be achieved by a pulsed field in a diabatic way, which can increase the fault tolerance of the system. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

Dynamics of one-dimensional tight-binding models with arbitrary time-dependent external homogeneous fields

Quantum Information Processing , Volume 12 (11) – Aug 1, 2013

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References (31)

Publisher
Springer Journals
Copyright
Copyright © 2013 by Springer Science+Business Media New York
Subject
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
ISSN
1570-0755
eISSN
1573-1332
DOI
10.1007/s11128-013-0616-7
Publisher site
See Article on Publisher Site

Abstract

We study the dynamics of one dimensional tight-binding model with arbitrary time-dependent external fields in a rigorous manner. The exact propagators of systems with homogeneous electric and magnetic fields are presented by following the path-integral method. The phenomena of Bloch and super Bloch oscillations are revisited in the framework of propagator theory. It is shown that the Bloch acceleration theorem can be generalized to the impulse-momentum theorem in a quantum version, which provides new tools for quantum state control. As an application, the stopping and accelerating of a wave packet can be achieved by a pulsed field in a diabatic way, which can increase the fault tolerance of the system.

Journal

Quantum Information ProcessingSpringer Journals

Published: Aug 1, 2013

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