PIRSA:19060030

Video URL

https://pirsa.org/19060030

Maximally sensitive sets of states

Gottesman, D. (2019). Maximally sensitive sets of states. Perimeter Institute for Theoretical Physics. https://pirsa.org/19060030

Gottesman, Daniel. Maximally sensitive sets of states. Perimeter Institute for Theoretical Physics, Jun. 13, 2019, https://pirsa.org/19060030 

          @misc{ scivideos_PIRSA:19060030,
            doi = {10.48660/19060030},
            url = {https://pirsa.org/19060030},
            author = {Gottesman, Daniel},
            keywords = {Quantum Matter},
            language = {en},
            title = {Maximally sensitive sets of states},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2019},
            month = {jun},
            note = {PIRSA:19060030 see, \url{https://scivideos.org/pirsa/19060030}}
          }

Daniel Gottesman University of Maryland, College Park

Talk numberPIRSA:19060030
DOI10.48660/19060030
Source RepositoryPIRSA
Collection
Talk Type Conference
Subject

Abstract

Coherent errors in a quantum system can, in principle, build up much more rapidly than incoherent errors, accumulating as the square of the number of qubits in the system rather than linearly. I will characterize the types of channels that can exhibit such behavior and present a simple protocol that can detect and characterize coherent errors whenever they are present, no matter what their nature. This allows us to identify coherent errors in gates and measurements to within a constant fraction of the maximum possible sensitivity to such errors.