Robust, self-consistent, closed-form tomography of quantum logic gates on a trapped ion qubit
By Robin Blume-Kohout, J. Gamble, Erik Nielsen, J. Mizrahi, J. Sterk, Peter Maunz. 2013
175 citations recorded by the source corpus.
We introduce and demonstrate experimentally: (1) a framework called "gate set tomography" (GST) for self-consistently characterizing an entire set of quantum logic gates on a black-box quantum device; (2) an explicit closed-form protocol for linear-inversion gate set tomography (LGST), whose reliability is independent of pathologies such as local maxima of the likelihood; and (3) a simple protocol for objectively scoring the accuracy of a tomographic estimate without reference to target gates, based on how well it predicts a set of testing experiments. We use gate set tomography to characterize a set of Clifford-generating gates on a single trapped-ion qubit, and compare the performance of (i) standard process tomography; (ii) linear gate set tomography; and (iii) maximum likelihood gate set tomography.
Subfields: Atomic and Molecular Physics, and Optics, Structural Biology, Surfaces, Coatings and Films
View Paper: https://www.semanticscholar.org/paper/e8b32f4312241a2913f956678d9001fb9797dde8
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In Atomic and Molecular Physics, and Optics
Citations in the corpus
- Demonstration of qubit operations below a rigorous fault tolerance threshold with gate set tomography (2016, methodology): “GST protocols based on short quantum circuits were developed at IBM38 and Sandia32.”
- Quantum certification and benchmarking (2019, background): “The rather extreme and resourceintense solution to this problem is gate set tomography which instead of focusing on a single quantum channel or state, characterizes an entire set of quantum gates, the state preparation and the measurement self-consistently from different gate sequences [16, 17, 85].”