Analytically parametrized solutions for robust quantum control using smooth pulses

Utkan Güngördü and J. P. Kestner
Phys. Rev. A 100, 062310 – Published 6 December 2019

Abstract

Achieving high-fidelity control of quantum systems is essential for realization of a practical quantum computer. Composite pulse sequences which suppress different types of errors can be nested to suppress a wide variety of errors but the result is often not optimal, especially in the presence of constraints such as bandwidth limitations. Robust smooth pulse shaping provides flexibility but obtaining such analytical pulse shapes is a nontrivial problem and choosing the appropriate parameters typically requires a numerical search in a high-dimensional space. In this work, we extend a previous analytical treatment of robust smooth pulses to allow the determination of pulse parameters without numerical search. We also show that the problem can be reduced to a set of coupled ordinary differential equations which allows for a more streamlined numerical treatment.

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  • Received 3 July 2019

DOI:https://doi.org/10.1103/PhysRevA.100.062310

©2019 American Physical Society

Physics Subject Headings (PhySH)

  1. Physical Systems
Quantum Information, Science & TechnologyCondensed Matter, Materials & Applied Physics

Authors & Affiliations

Utkan Güngördü* and J. P. Kestner

  • Department of Physics, University of Maryland Baltimore County, Baltimore, Maryland 21250, USA

  • *utkan@umbc.edu

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Issue

Vol. 100, Iss. 6 — December 2019

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