A simple formula for the average gate fidelity of a quantum dynamical operation
Quantum Physics
2009-11-07 v2
Abstract
This note presents a simple formula for the average fidelity between a unitary quantum gate and a general quantum operation on a qudit, generalizing the formula for qubits found by Bowdrey et al [Phys. Lett. A 294, 258 (2002)]. This formula may be useful for experimental determination of average gate fidelity. We also give a simplified proof of a formula due to Horodecki et al [Phys. Rev. A 60, 1888 (1999)], connecting average gate fidelity to entanglement fidelity.
Keywords
Cite
@article{arxiv.quant-ph/0205035,
title = {A simple formula for the average gate fidelity of a quantum dynamical operation},
author = {Michael A. Nielsen},
journal= {arXiv preprint arXiv:quant-ph/0205035},
year = {2009}
}
Comments
3 pages, references and discussion of prior work updated