Proposal for a destructive controlled phase gate using linear optics

Abstract Knill, Laflamme, and Milburn showed that linear optics techniques could be used to implement a nonlinear sign gate. They also showed that two of their nonlinear sign gates could be combined to implement a controlled-phase gate, which has a number of practical applications. Here we describe...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	S. U. Shringarpure, J. D. Franson
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/7d354f75d6b54e8bbbb44563ad4905df
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:7d354f75d6b54e8bbbb44563ad4905df
record_format	dspace
spelling	oai:doaj.org-article:7d354f75d6b54e8bbbb44563ad4905df2021-11-14T12:21:52ZProposal for a destructive controlled phase gate using linear optics10.1038/s41598-021-01384-22045-2322https://doaj.org/article/7d354f75d6b54e8bbbb44563ad4905df2021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-01384-2https://doaj.org/toc/2045-2322Abstract Knill, Laflamme, and Milburn showed that linear optics techniques could be used to implement a nonlinear sign gate. They also showed that two of their nonlinear sign gates could be combined to implement a controlled-phase gate, which has a number of practical applications. Here we describe an alternative implementation of a controlled-phase gate for a single-rail target qubit that only requires the use of a single nonlinear sign gate. This gives a much higher average probability of success when the required ancilla photons are generated using heralding techniques. This implementation of a controlled-phase gate destroys the control qubit, which is acceptable in a number of applications where the control qubit would have been destroyed in any event, such as in a postselection process.S. U. ShringarpureJ. D. FransonNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q S. U. Shringarpure J. D. Franson Proposal for a destructive controlled phase gate using linear optics
description	Abstract Knill, Laflamme, and Milburn showed that linear optics techniques could be used to implement a nonlinear sign gate. They also showed that two of their nonlinear sign gates could be combined to implement a controlled-phase gate, which has a number of practical applications. Here we describe an alternative implementation of a controlled-phase gate for a single-rail target qubit that only requires the use of a single nonlinear sign gate. This gives a much higher average probability of success when the required ancilla photons are generated using heralding techniques. This implementation of a controlled-phase gate destroys the control qubit, which is acceptable in a number of applications where the control qubit would have been destroyed in any event, such as in a postselection process.
format	article
author	S. U. Shringarpure J. D. Franson
author_facet	S. U. Shringarpure J. D. Franson
author_sort	S. U. Shringarpure
title	Proposal for a destructive controlled phase gate using linear optics
title_short	Proposal for a destructive controlled phase gate using linear optics
title_full	Proposal for a destructive controlled phase gate using linear optics
title_fullStr	Proposal for a destructive controlled phase gate using linear optics
title_full_unstemmed	Proposal for a destructive controlled phase gate using linear optics
title_sort	proposal for a destructive controlled phase gate using linear optics
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/7d354f75d6b54e8bbbb44563ad4905df
work_keys_str_mv	AT sushringarpure proposalforadestructivecontrolledphasegateusinglinearoptics AT jdfranson proposalforadestructivecontrolledphasegateusinglinearoptics
_version_	1718429237060304896

Proposal for a destructive controlled phase gate using linear optics

Ejemplares similares