Experimental quantum forgery of quantum optical money

Quantum money could protect currency against cryptographic attacks Traditional cash is being gradually replaced by digital payments and transactions with digital currency, such as bitcoin. Digital transactions are currently protected by cryptographic protocols. However, these protocols are potential...

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Main Authors:	Karol Bartkiewicz, Antonín Černoch, Grzegorz Chimczak, Karel Lemr, Adam Miranowicz, Franco Nori
Format:	article
Language:	EN
Published:	Nature Portfolio 2017
Subjects:	Physics QC1-999 Electronic computers. Computer science QA75.5-76.95
Online Access:	https://doaj.org/article/bcd0e65b84b1488fbda96121d0d5adf9
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spelling	oai:doaj.org-article:bcd0e65b84b1488fbda96121d0d5adf92021-12-02T15:10:12ZExperimental quantum forgery of quantum optical money10.1038/s41534-017-0010-x2056-6387https://doaj.org/article/bcd0e65b84b1488fbda96121d0d5adf92017-03-01T00:00:00Zhttps://doi.org/10.1038/s41534-017-0010-xhttps://doaj.org/toc/2056-6387Quantum money could protect currency against cryptographic attacks Traditional cash is being gradually replaced by digital payments and transactions with digital currency, such as bitcoin. Digital transactions are currently protected by cryptographic protocols. However, these protocols are potentially susceptible to attacks using quantum factoring algorithm. If quantum factoring is implemented on quantum computers, the resulting breach of security could make today’s digital currency obsolete. It is possible, however, to replace classical digital money with so-called quantum money, i.e., sequences of quantum bits copy-protected by their quantum nature. This paper reports on the experimental quantum optical implementation of a quantum money protocol, which was experimentally tested regarding its resistance to quantum counterfeiting based on the best physically-possible copying of individual unknown quantum bits.Karol BartkiewiczAntonín ČernochGrzegorz ChimczakKarel LemrAdam MiranowiczFranco NoriNature PortfolioarticlePhysicsQC1-999Electronic computers. Computer scienceQA75.5-76.95ENnpj Quantum Information, Vol 3, Iss 1, Pp 1-8 (2017)
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 Karol Bartkiewicz Antonín Černoch Grzegorz Chimczak Karel Lemr Adam Miranowicz Franco Nori Experimental quantum forgery of quantum optical money
description	Quantum money could protect currency against cryptographic attacks Traditional cash is being gradually replaced by digital payments and transactions with digital currency, such as bitcoin. Digital transactions are currently protected by cryptographic protocols. However, these protocols are potentially susceptible to attacks using quantum factoring algorithm. If quantum factoring is implemented on quantum computers, the resulting breach of security could make today’s digital currency obsolete. It is possible, however, to replace classical digital money with so-called quantum money, i.e., sequences of quantum bits copy-protected by their quantum nature. This paper reports on the experimental quantum optical implementation of a quantum money protocol, which was experimentally tested regarding its resistance to quantum counterfeiting based on the best physically-possible copying of individual unknown quantum bits.
format	article
author	Karol Bartkiewicz Antonín Černoch Grzegorz Chimczak Karel Lemr Adam Miranowicz Franco Nori
author_facet	Karol Bartkiewicz Antonín Černoch Grzegorz Chimczak Karel Lemr Adam Miranowicz Franco Nori
author_sort	Karol Bartkiewicz
title	Experimental quantum forgery of quantum optical money
title_short	Experimental quantum forgery of quantum optical money
title_full	Experimental quantum forgery of quantum optical money
title_fullStr	Experimental quantum forgery of quantum optical money
title_full_unstemmed	Experimental quantum forgery of quantum optical money
title_sort	experimental quantum forgery of quantum optical money
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/bcd0e65b84b1488fbda96121d0d5adf9
work_keys_str_mv	AT karolbartkiewicz experimentalquantumforgeryofquantumopticalmoney AT antonincernoch experimentalquantumforgeryofquantumopticalmoney AT grzegorzchimczak experimentalquantumforgeryofquantumopticalmoney AT karellemr experimentalquantumforgeryofquantumopticalmoney AT adammiranowicz experimentalquantumforgeryofquantumopticalmoney AT franconori experimentalquantumforgeryofquantumopticalmoney
_version_	1718387716728553472

Experimental quantum forgery of quantum optical money

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