PIRSA:15090088 Scientific Series Quantum Information

DOI10.48660/15090088

Series: Perimeter Institute Quantum Discussions

Wallman, J. (2015). Characterizing the coherence of errors. Perimeter Institute. https://pirsa.org/15090088

Wallman, Joel. Characterizing the coherence of errors. Perimeter Institute, Sep. 30, 2015, https://pirsa.org/15090088 

@misc{ pirsa_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},
  year = {2015},
  month = {sep},
  note = {PIRSA:15090088 see, \url{https://pirsa.org}}
}

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.

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