Analytically parameterized solutions for robust quantum control using smooth pulses
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2019-06
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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 non-trivial 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.