Journal article
Cross-verification of independent quantum devices
- Abstract:
- Quantum computers are on the brink of surpassing the capabilities of even the most powerful classical computers, which naturally raises the question of how one can trust the results of a quantum computer when they cannot be compared to classical simulation Here, we present a cross-verification technique that exploits the principles of measurement-based quantum computation to link quantum circuits of different input size, depth, and structure. Our technique enables consistency checks of quantum computations between independent devices, as well as within a single device. We showcase our protocol by applying it to five state-of-the-art quantum processors, based on four distinct physical architectures: nuclear magnetic resonance, superconducting circuits, trapped ions, and photonics, with up to six qubits and up to 200 distinct circuits.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, 1.7MB, Terms of use)
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- Publisher copy:
- 10.1103/PhysRevX.11.031049
Authors
- Publisher:
- American Physical Society
- Journal:
- Physical Review X More from this journal
- Volume:
- 11
- Issue:
- 3
- Article number:
- 031049
- Publication date:
- 2021-09-02
- Acceptance date:
- 2021-07-06
- DOI:
- EISSN:
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2160-3308
- Language:
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English
- Keywords:
- Pubs id:
-
1003276
- Local pid:
-
pubs:1003276
- Deposit date:
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2021-08-10
Terms of use
- Copyright holder:
- Greganti et al.
- Copyright date:
- 2021
- Rights statement:
- Copyright © The Authors. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
- Licence:
- CC Attribution (CC BY)
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