Probabilistic one-time programs using quantum entanglement

Abstract Quantum technology allows for unparalleled levels of data and software protection. Probabilistic one-time programs harness these capabilities for quantum-assisted classical computations by encoding classical software in small quantum states resulting in computer programs that can be used on...

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Autores principales:	Marie-Christine Roehsner, Joshua A. Kettlewell, Joseph Fitzsimons, Philip Walther
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Physics QC1-999 Electronic computers. Computer science QA75.5-76.95
Acceso en línea:	https://doaj.org/article/4f3b32a1067a4a74879d9ef89e1473a1
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spelling	oai:doaj.org-article:4f3b32a1067a4a74879d9ef89e1473a12021-12-02T17:41:10ZProbabilistic one-time programs using quantum entanglement10.1038/s41534-021-00435-w2056-6387https://doaj.org/article/4f3b32a1067a4a74879d9ef89e1473a12021-06-01T00:00:00Zhttps://doi.org/10.1038/s41534-021-00435-whttps://doaj.org/toc/2056-6387Abstract Quantum technology allows for unparalleled levels of data and software protection. Probabilistic one-time programs harness these capabilities for quantum-assisted classical computations by encoding classical software in small quantum states resulting in computer programs that can be used only once. Such self-destructing one-time programs facilitate a variety of applications reaching from software distribution to one-time delegation of signature authority. Whereas previous experiments demonstrated the feasibility of such schemes, the practical applications were limited. Here we present an improved protocol for one-time programs that resolves major drawbacks of previous schemes, by employing entangled qubit pairs. This results in four orders of magnitude higher count rates and the ability to execute a program long after the quantum information exchange has taken place. We implement a one-time delegation of signature authority over an underground fiber link between university buildings in downtown Vienna, emphasizing the compatibility of our scheme with prepare-and-measure quantum internet networks.Marie-Christine RoehsnerJoshua A. KettlewellJoseph FitzsimonsPhilip WaltherNature PortfolioarticlePhysicsQC1-999Electronic computers. Computer scienceQA75.5-76.95ENnpj Quantum Information, Vol 7, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Electronic computers. Computer science QA75.5-76.95
spellingShingle	Physics QC1-999 Electronic computers. Computer science QA75.5-76.95 Marie-Christine Roehsner Joshua A. Kettlewell Joseph Fitzsimons Philip Walther Probabilistic one-time programs using quantum entanglement
description	Abstract Quantum technology allows for unparalleled levels of data and software protection. Probabilistic one-time programs harness these capabilities for quantum-assisted classical computations by encoding classical software in small quantum states resulting in computer programs that can be used only once. Such self-destructing one-time programs facilitate a variety of applications reaching from software distribution to one-time delegation of signature authority. Whereas previous experiments demonstrated the feasibility of such schemes, the practical applications were limited. Here we present an improved protocol for one-time programs that resolves major drawbacks of previous schemes, by employing entangled qubit pairs. This results in four orders of magnitude higher count rates and the ability to execute a program long after the quantum information exchange has taken place. We implement a one-time delegation of signature authority over an underground fiber link between university buildings in downtown Vienna, emphasizing the compatibility of our scheme with prepare-and-measure quantum internet networks.
format	article
author	Marie-Christine Roehsner Joshua A. Kettlewell Joseph Fitzsimons Philip Walther
author_facet	Marie-Christine Roehsner Joshua A. Kettlewell Joseph Fitzsimons Philip Walther
author_sort	Marie-Christine Roehsner
title	Probabilistic one-time programs using quantum entanglement
title_short	Probabilistic one-time programs using quantum entanglement
title_full	Probabilistic one-time programs using quantum entanglement
title_fullStr	Probabilistic one-time programs using quantum entanglement
title_full_unstemmed	Probabilistic one-time programs using quantum entanglement
title_sort	probabilistic one-time programs using quantum entanglement
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/4f3b32a1067a4a74879d9ef89e1473a1
work_keys_str_mv	AT mariechristineroehsner probabilisticonetimeprogramsusingquantumentanglement AT joshuaakettlewell probabilisticonetimeprogramsusingquantumentanglement AT josephfitzsimons probabilisticonetimeprogramsusingquantumentanglement AT philipwalther probabilisticonetimeprogramsusingquantumentanglement
_version_	1718379703452041216

Probabilistic one-time programs using quantum entanglement

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