Publication Details

AutoQ 2.0: From Verification of Quantum Circuits to Verification of Quantum Programs

LENGÁL, O.; CHEN, Y.; LIN, J.; TSAI, W.; HSIEH, M.; HUANG, W.; CHUNG, K. AutoQ 2.0: From Verification of Quantum Circuits to Verification of Quantum Programs. Proceedings of TACAS'25. Lecture Notes in Computer Science. Springer Verlag, 2025. ISSN: 0302-9743.

Czech title

AutoQ 2.0: Od verifikace kvantových obvodů k verifikaci kvantových programů

Type

conference paper

Language

English

Authors

Lengál Ondřej, Ing., Ph.D. (DITS)
Chen Yu-Fang
LIN, J.
TSAI, W.
HSIEH, M.
HUANG, W.
CHUNG, K.

Keywords

quantum programs
tree automata
measurement
verification

Abstract

We present a verifier of quantum programs called AutoQ 2.0. Quantum programs
extend quantum circuits (the domain of AutoQ 1.0) by classical control flow
constructs, which enable users to describe advanced quantum algorithms in
a formal and precise manner. The extension is highly non-trivial, as we needed to
tackle both theoretical challenges (such as the treatment of measurement, the
normalization problem, and lifting techniques for verification of classical
programs with loops to the quantum world), and engineering issues (such as
extending the input format with a support for specifying loop invariants). We
have successfully used AutoQ 2.0 to verify two types of advanced quantum programs
that cannot be expressed using only quantum circuits: the repeat-until-success
(RUS) algorithm and the weak-measurement-based version of Grover's search
algorithm. AutoQ 2.0 can efficiently verify all our benchmarks: all
RUS algorithms were verified instantly and, for the weak-measurement-based
version of Grover's search, we were able to handle the case of 100 qubits in 20
minutes.

Published

2025 (in print)

Journal

Lecture Notes in Computer Science, ISSN 0302-9743

Proceedings

Proceedings of TACAS'25

Conference

31st International Conference on Tools and Algorithms for the Construction and Analysis of Systems --- TACAS'25, Hamilton, CA

Publisher

Springer Verlag

BibTeX

@inproceedings{BUT196845,
  author="LENGÁL, O. and CHEN, Y. and LIN, J. and TSAI, W. and HSIEH, M. and HUANG, W. and CHUNG, K.",
  title="AutoQ 2.0: From Verification of Quantum Circuits to Verification of Quantum Programs",
  booktitle="Proceedings of TACAS'25",
  year="2025",
  journal="Lecture Notes in Computer Science",
  publisher="Springer Verlag",
  issn="0302-9743"
}