Squeezing and quantum state engineering with Josephson travelling wave amplifiers

Quantum information: Microwave quantum computer Microwaves, familiar from our everyday lives, can be used to perform quantum computation. We show how this is possible using a quantum electronic device called a Josephson Travelling Wave Parametric Amplifier, or TWPA for short. This device has already...

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Autores principales:	Arne L. Grimsmo, Alexandre Blais
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Physics QC1-999 Electronic computers. Computer science QA75.5-76.95
Acceso en línea:	https://doaj.org/article/1ad0468584ee457b9cbfb0198b53ef7c
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spelling	oai:doaj.org-article:1ad0468584ee457b9cbfb0198b53ef7c2021-12-02T12:33:55ZSqueezing and quantum state engineering with Josephson travelling wave amplifiers10.1038/s41534-017-0020-82056-6387https://doaj.org/article/1ad0468584ee457b9cbfb0198b53ef7c2017-06-01T00:00:00Zhttps://doi.org/10.1038/s41534-017-0020-8https://doaj.org/toc/2056-6387Quantum information: Microwave quantum computer Microwaves, familiar from our everyday lives, can be used to perform quantum computation. We show how this is possible using a quantum electronic device called a Josephson Travelling Wave Parametric Amplifier, or TWPA for short. This device has already been made and extensively tested in the lab for the purpose of amplifying extremely weak signals. We here demonstrate that the TWPA is much more than just an amplifier: It is a remarkably powerful resource for generating just the type of entanglement that is needed for a quantum computer. Surprisingly, a full-fledged universal quantum computer can be made using just four such devices, if their output radiation is combined to interfere in just the right way. This proposal may lead to small-scale quantum computers using already existing technology.Arne L. GrimsmoAlexandre BlaisNature PortfolioarticlePhysicsQC1-999Electronic computers. Computer scienceQA75.5-76.95ENnpj Quantum Information, Vol 3, Iss 1, Pp 1-11 (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 Arne L. Grimsmo Alexandre Blais Squeezing and quantum state engineering with Josephson travelling wave amplifiers
description	Quantum information: Microwave quantum computer Microwaves, familiar from our everyday lives, can be used to perform quantum computation. We show how this is possible using a quantum electronic device called a Josephson Travelling Wave Parametric Amplifier, or TWPA for short. This device has already been made and extensively tested in the lab for the purpose of amplifying extremely weak signals. We here demonstrate that the TWPA is much more than just an amplifier: It is a remarkably powerful resource for generating just the type of entanglement that is needed for a quantum computer. Surprisingly, a full-fledged universal quantum computer can be made using just four such devices, if their output radiation is combined to interfere in just the right way. This proposal may lead to small-scale quantum computers using already existing technology.
format	article
author	Arne L. Grimsmo Alexandre Blais
author_facet	Arne L. Grimsmo Alexandre Blais
author_sort	Arne L. Grimsmo
title	Squeezing and quantum state engineering with Josephson travelling wave amplifiers
title_short	Squeezing and quantum state engineering with Josephson travelling wave amplifiers
title_full	Squeezing and quantum state engineering with Josephson travelling wave amplifiers
title_fullStr	Squeezing and quantum state engineering with Josephson travelling wave amplifiers
title_full_unstemmed	Squeezing and quantum state engineering with Josephson travelling wave amplifiers
title_sort	squeezing and quantum state engineering with josephson travelling wave amplifiers
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/1ad0468584ee457b9cbfb0198b53ef7c
work_keys_str_mv	AT arnelgrimsmo squeezingandquantumstateengineeringwithjosephsontravellingwaveamplifiers AT alexandreblais squeezingandquantumstateengineeringwithjosephsontravellingwaveamplifiers
_version_	1718393845002010624

Squeezing and quantum state engineering with Josephson travelling wave amplifiers

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