Unifying Gate Synthesis and Magic State Distillation

Earl T. Campbell and Mark Howard
Phys. Rev. Lett. 118, 060501 – Published 9 February 2017

Abstract

The leading paradigm for performing a computation on quantum memories can be encapsulated as distill-then-synthesize. Initially, one performs several rounds of distillation to create high-fidelity magic states that provide one good T gate, an essential quantum logic gate. Subsequently, gate synthesis intersperses many T gates with Clifford gates to realize a desired circuit. We introduce a unified framework that implements one round of distillation and multiquibit gate synthesis in a single step. Typically, our method uses the same number of T gates as conventional synthesis but with the added benefit of quadratic error suppression. Because of this, one less round of magic state distillation needs to be performed, leading to significant resource savings.

  • Figure
  • Figure
  • Figure
  • Received 4 August 2016

DOI:https://doi.org/10.1103/PhysRevLett.118.060501

© 2017 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & Technology

Authors & Affiliations

Earl T. Campbell* and Mark Howard

  • Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom

  • *earltcampbell@gmail.com

See Also

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 118, Iss. 6 — 10 February 2017

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×