Scalable and Robust Randomized Benchmarking of Quantum Processes

被引:530
作者
Magesan, Easwar [1 ]
Gambetta, J. M.
Emerson, Joseph
机构
[1] Univ Waterloo, Inst Quantum Comp, Waterloo, ON N2L 3G1, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
PROCESS TOMOGRAPHY;
D O I
10.1103/PhysRevLett.106.180504
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
In this Letter we propose a fully scalable randomized benchmarking protocol for quantum information processors. We prove that the protocol provides an efficient and reliable estimate of the average error-rate for a set operations (gates) under a very general noise model that allows for both time and gate-dependent errors. In particular we obtain a sequence of fitting models for the observable fidelity decay as a function of a (convergent) perturbative expansion of the gate errors about the mean error. We illustrate the protocol through numerical examples.
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页数:4
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