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Optimal local control of coherent dynamics in custom-made nanostructures

Thomas Blasi, Mario F. Borunda, Esa Räsänen, and Eric J. Heller
Phys. Rev. B 87, 241303(R) – Published 13 June 2013
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Abstract

We apply quantum optimal control theory to establish a local voltage-control scheme that operates in conjunction with the numerically exact solution of the time-dependent Schrödinger equation. The scheme is demonstrated for high-fidelity coherent control of electronic charge in semiconductor double quantum dots. We find tailored gate voltages in the viable gigahertz regime that drive the system to a desired charge configuration with >99% yield. The results could be immediately verified in experiments and would play an important role in applications towards solid-state quantum computing.

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  • Received 1 March 2013

DOI:https://doi.org/10.1103/PhysRevB.87.241303

©2013 American Physical Society

Authors & Affiliations

Thomas Blasi1,2, Mario F. Borunda1,3,*, Esa Räsänen1,4,5, and Eric J. Heller1,6

  • 1Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA
  • 2Physik Department, Technische Universität München, James-Franck-Str., 85747 Garching, Germany
  • 3Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078, USA
  • 4Department of Physics, Tampere University of Technology, FI-33101 Tampere, Finland
  • 5Nanoscience Center, Department of Physics, University of Jyväskylä, FI-40014 Jyväskylä, Finland
  • 6Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA

  • *mario.borunda@okstate.edu

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Issue

Vol. 87, Iss. 24 — 15 June 2013

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