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PIRSA:15090088

Video URL

https://pirsa.org/15090088

Characterizing the coherence of errors

          @misc{ scivideos_PIRSA:15090088,
            doi = {10.48660/15090088},
            url = {https://pirsa.org/15090088},
            author = {Wallman, Joel},
            keywords = {Quantum Information},
            language = {en},
            title = {Characterizing the coherence of errors},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2015},
            month = {sep},
            note = {PIRSA:15090088 see, \url{https://scivideos.org/pirsa/15090088}}
          }

Joel Wallman Institute for Quantum Computing (IQC)

Talk numberPIRSA:15090088
DOI10.48660/15090088
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

I will introduce the unitarity, a parameter quantifying the coherence of a channel and show that it is useful for two reasons. First, it can be efficiently estimated via a variant of randomized benchmarking. Second, it captures useful information about the channel, such as the optimal fidelity achievable with unitary corrections and an improved bound on the diamond distance.