Cross-Verification of Independent Quantum Devices

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 techn...

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Autores principales:	C. Greganti, T. F. Demarie, M. Ringbauer, J. A. Jones, V. Saggio, I. Alonso Calafell, L. A. Rozema, A. Erhard, M. Meth, L. Postler, R. Stricker, P. Schindler, R. Blatt, T. Monz, P. Walther, J. F. Fitzsimons
Formato:	article
Lenguaje:	EN
Publicado:	American Physical Society 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/cb3472e1db294972a2801ee09a2868ad
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spelling	oai:doaj.org-article:cb3472e1db294972a2801ee09a2868ad2021-12-02T18:41:37ZCross-Verification of Independent Quantum Devices10.1103/PhysRevX.11.0310492160-3308https://doaj.org/article/cb3472e1db294972a2801ee09a2868ad2021-09-01T00:00:00Zhttp://doi.org/10.1103/PhysRevX.11.031049http://doi.org/10.1103/PhysRevX.11.031049https://doaj.org/toc/2160-3308Quantum 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.C. GregantiT. F. DemarieM. RingbauerJ. A. JonesV. SaggioI. Alonso CalafellL. A. RozemaA. ErhardM. MethL. PostlerR. StrickerP. SchindlerR. BlattT. MonzP. WaltherJ. F. FitzsimonsAmerican Physical SocietyarticlePhysicsQC1-999ENPhysical Review X, Vol 11, Iss 3, p 031049 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 C. Greganti T. F. Demarie M. Ringbauer J. A. Jones V. Saggio I. Alonso Calafell L. A. Rozema A. Erhard M. Meth L. Postler R. Stricker P. Schindler R. Blatt T. Monz P. Walther J. F. Fitzsimons Cross-Verification of Independent Quantum Devices
description	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.
format	article
author	C. Greganti T. F. Demarie M. Ringbauer J. A. Jones V. Saggio I. Alonso Calafell L. A. Rozema A. Erhard M. Meth L. Postler R. Stricker P. Schindler R. Blatt T. Monz P. Walther J. F. Fitzsimons
author_facet	C. Greganti T. F. Demarie M. Ringbauer J. A. Jones V. Saggio I. Alonso Calafell L. A. Rozema A. Erhard M. Meth L. Postler R. Stricker P. Schindler R. Blatt T. Monz P. Walther J. F. Fitzsimons
author_sort	C. Greganti
title	Cross-Verification of Independent Quantum Devices
title_short	Cross-Verification of Independent Quantum Devices
title_full	Cross-Verification of Independent Quantum Devices
title_fullStr	Cross-Verification of Independent Quantum Devices
title_full_unstemmed	Cross-Verification of Independent Quantum Devices
title_sort	cross-verification of independent quantum devices
publisher	American Physical Society
publishDate	2021
url	https://doaj.org/article/cb3472e1db294972a2801ee09a2868ad
work_keys_str_mv	AT cgreganti crossverificationofindependentquantumdevices AT tfdemarie crossverificationofindependentquantumdevices AT mringbauer crossverificationofindependentquantumdevices AT jajones crossverificationofindependentquantumdevices AT vsaggio crossverificationofindependentquantumdevices AT ialonsocalafell crossverificationofindependentquantumdevices AT larozema crossverificationofindependentquantumdevices AT aerhard crossverificationofindependentquantumdevices AT mmeth crossverificationofindependentquantumdevices AT lpostler crossverificationofindependentquantumdevices AT rstricker crossverificationofindependentquantumdevices AT pschindler crossverificationofindependentquantumdevices AT rblatt crossverificationofindependentquantumdevices AT tmonz crossverificationofindependentquantumdevices AT pwalther crossverificationofindependentquantumdevices AT jffitzsimons crossverificationofindependentquantumdevices
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Cross-Verification of Independent Quantum Devices

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