A two-qubit photonic quantum processor and its application to solving systems of linear equations

Large-scale quantum computers will require the ability to apply long sequences of entangling gates to many qubits. In a photonic architecture, where single-qubit gates can be performed easily and precisely, the application of consecutive two-qubit entangling gates has been a significant obstacle. He...

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Autores principales: Barz, Stefanie, Kassal, Ivan, Ringbauer, Martin, Lipp, Yannick Ole, Dakić, Borivoje, Aspuru-Guzik, Alán, Walther, Philip
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2014
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4137340/
https://www.ncbi.nlm.nih.gov/pubmed/25135432
http://dx.doi.org/10.1038/srep06115
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author Barz, Stefanie
Kassal, Ivan
Ringbauer, Martin
Lipp, Yannick Ole
Dakić, Borivoje
Aspuru-Guzik, Alán
Walther, Philip
author_facet Barz, Stefanie
Kassal, Ivan
Ringbauer, Martin
Lipp, Yannick Ole
Dakić, Borivoje
Aspuru-Guzik, Alán
Walther, Philip
author_sort Barz, Stefanie
collection PubMed
description Large-scale quantum computers will require the ability to apply long sequences of entangling gates to many qubits. In a photonic architecture, where single-qubit gates can be performed easily and precisely, the application of consecutive two-qubit entangling gates has been a significant obstacle. Here, we demonstrate a two-qubit photonic quantum processor that implements two consecutive CNOT gates on the same pair of polarisation-encoded qubits. To demonstrate the flexibility of our system, we implement various instances of the quantum algorithm for solving of systems of linear equations.
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spelling pubmed-41373402014-08-27 A two-qubit photonic quantum processor and its application to solving systems of linear equations Barz, Stefanie Kassal, Ivan Ringbauer, Martin Lipp, Yannick Ole Dakić, Borivoje Aspuru-Guzik, Alán Walther, Philip Sci Rep Article Large-scale quantum computers will require the ability to apply long sequences of entangling gates to many qubits. In a photonic architecture, where single-qubit gates can be performed easily and precisely, the application of consecutive two-qubit entangling gates has been a significant obstacle. Here, we demonstrate a two-qubit photonic quantum processor that implements two consecutive CNOT gates on the same pair of polarisation-encoded qubits. To demonstrate the flexibility of our system, we implement various instances of the quantum algorithm for solving of systems of linear equations. Nature Publishing Group 2014-08-19 /pmc/articles/PMC4137340/ /pubmed/25135432 http://dx.doi.org/10.1038/srep06115 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/4.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/
spellingShingle Article
Barz, Stefanie
Kassal, Ivan
Ringbauer, Martin
Lipp, Yannick Ole
Dakić, Borivoje
Aspuru-Guzik, Alán
Walther, Philip
A two-qubit photonic quantum processor and its application to solving systems of linear equations
title A two-qubit photonic quantum processor and its application to solving systems of linear equations
title_full A two-qubit photonic quantum processor and its application to solving systems of linear equations
title_fullStr A two-qubit photonic quantum processor and its application to solving systems of linear equations
title_full_unstemmed A two-qubit photonic quantum processor and its application to solving systems of linear equations
title_short A two-qubit photonic quantum processor and its application to solving systems of linear equations
title_sort two-qubit photonic quantum processor and its application to solving systems of linear equations
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4137340/
https://www.ncbi.nlm.nih.gov/pubmed/25135432
http://dx.doi.org/10.1038/srep06115
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