Probabilistic error cancellation for dynamic quantum circuits

被引：12

作者：

Gupta, Riddhi S. ^{[1
]}

van den Berg, Ewout ^{[1
]}

Takita, Maika ^{[1
]}

Riste, Diego ^{[1
]}

Temme, Kristan ^{[1
]}

Kandala, Abhinav ^{[1
]}

机构：

[1] IBM Quantum, TJ Watson Res Ctr, Yorktown Hts, NY 10598 USA

来源：

PHYSICAL REVIEW A | 2024年 / 109卷 / 06期

关键词：

GATES;

D O I：

10.1103/PhysRevA.109.062617

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Probabilistic error cancellation (PEC) is a technique that generates error -mitigated estimates of expectation values from ensembles of quantum circuits. In this work we extend the application of PEC from unitary -only circuits to dynamic circuits with midcircuit measurements and classically controlled (feedforward) Clifford operations. Our approach extends the sparse Pauli -Lindblad noise model from characterizing gates to characterizing target channels containing midcircuit measurements and feedforward while accounting for nonlocal measurement crosstalk in superconducting processors. Our mitigation and monitoring experiments provide a holistic view for the performance of the protocols developed in this work. These capabilities will be a crucial tool in the exploration of near -term dynamic circuit applications.

引用

页数：13

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