Robust, self-consistent, closed-form tomography of quantum logic gates on a trapped ion qubit

Autor:	Blume-Kohout, Robin, Gamble, John King, Nielsen, Erik, Mizrahi, Jonathan, Sterk, Jonathan D., Maunz, Peter
Rok vydání:	2013
Předmět:	Quantum Physics
Druh dokumentu:	Working Paper
Popis:	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. Comment: 12 pages
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1310.4492 Zobrazit plný text záznamu View this record from Arxiv