Related papers: Gate-set evaluation metrics for closed-loop optimal control on nitrogen-vacancy center ensembles in diamond

Gate-set evaluation metrics for closed-loop optimal control on nitrogen-vacancy center ensembles in diamond

URL: http://arxiv.org/abs/2403.00616v2
Date: Sun, 24 Mar 2024 12:35:55 GMT
Title: Gate-set evaluation metrics for closed-loop optimal control on nitrogen-vacancy center ensembles in diamond
Authors: Philipp J. Vetter, Thomas Reisser, Maximilian G. Hirsch, Tommaso Calarco, Felix Motzoi, Fedor Jelezko, Matthias M. Müller,
Abstract summary: We show how to apply quantum optimal control in an application-oriented fashion. We use a macroscopic ensemble of nitrogen-vacancy centers in diamond as a test-bed. Our work demonstrates the relative trade-offs between those measures and how to significantly enhance the gate-set performance.
Score: 0.0
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: A recurring challenge in quantum science and technology is the precise control of their underlying dynamics that lead to the desired quantum operations, often described by a set of quantum gates. These gates can be subject to application-specific errors, leading to a dependence of their controls on the chosen circuit, the quality measure and the gate-set itself. A natural solution would be to apply quantum optimal control in an application-oriented fashion. In turn, this requires the definition of a meaningful measure of the contextual gate-set performance. Therefore, we explore and compare the applicability of quantum process tomography, linear inversion gate-set tomography, randomized linear gate-set tomography, and randomized benchmarking as measures for closed-loop quantum optimal control experiments, using a macroscopic ensemble of nitrogen-vacancy centers in diamond as a test-bed. Our work demonstrates the relative trade-offs between those measures and how to significantly enhance the gate-set performance, leading to an improvement across all investigated methods.

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