PIRSA:18020110 Scientific Series Quantum Information

DOI10.48660/18020110

Series: Perimeter Institute Quantum Discussions

Wallman, J. (2018). Characterizing useful quantum computers. Perimeter Institute. https://pirsa.org/18020110

Wallman, Joel. Characterizing useful quantum computers. Perimeter Institute, Feb. 28, 2018, https://pirsa.org/18020110 

@misc{ pirsa_PIRSA:18020110,
  doi = {10.48660/18020110},
  url = {https://pirsa.org/18020110},
  author = {Wallman, Joel},
  keywords = {Quantum Information},
  language = {en},
  title = {Characterizing useful quantum computers},
  publisher = {Perimeter Institute},
  year = {2018},
  month = {feb},
  note = {PIRSA:18020110 see, \url{https://pirsa.org}}
}

Abstract

Quantum computers can only offer a computational advantage when they have sufficiently many qubits operating with sufficiently small error rates. In this talk, I will show how both these requirements can be practically characterized by variants of randomized benchmarking protocols. I will first show that a simple modification to protocols based on randomized benchmarking allows multiplicative-precision estimates of error rates.  I will then outline a new protocol for estimating the fidelity of arbitrarily large quantum systems using only single-qubit randomizing gates.

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