Parity Detection of Propagating Microwave Fields

The parity of the number of elementary excitations present in a quantum system provides important insights into its physical properties. Parity measurements are used, for example, to tomographically reconstruct quantum states or to determine if the decay of an excitation has occurred, information th...

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Autores principales:	Jean-Claude Besse, Simone Gasparinetti, Michele C. Collodo, Theo Walter, Ants Remm, Jonas Krause, Christopher Eichler, Andreas Wallraff
Formato:	article
Lenguaje:	EN
Publicado:	American Physical Society 2020
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/e7fb8a3b22054fc09e77304a73e59dc3
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id	oai:doaj.org-article:e7fb8a3b22054fc09e77304a73e59dc3
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spelling	oai:doaj.org-article:e7fb8a3b22054fc09e77304a73e59dc32021-12-02T12:05:35ZParity Detection of Propagating Microwave Fields10.1103/PhysRevX.10.0110462160-3308https://doaj.org/article/e7fb8a3b22054fc09e77304a73e59dc32020-02-01T00:00:00Zhttp://doi.org/10.1103/PhysRevX.10.011046http://doi.org/10.1103/PhysRevX.10.011046https://doaj.org/toc/2160-3308The parity of the number of elementary excitations present in a quantum system provides important insights into its physical properties. Parity measurements are used, for example, to tomographically reconstruct quantum states or to determine if the decay of an excitation has occurred, information that can be used for quantum error correction in computation or communication protocols. Here, we demonstrate a versatile parity detector for propagating microwaves, which distinguishes between radiation fields containing an even or odd number n of photons, both in a single-shot measurement and without perturbing the parity of the detected field. We showcase applications of the detector for direct Wigner tomography of propagating microwaves and heralded generation of Schrödinger cat states. This parity detection scheme is applicable over a broad frequency range and may prove useful, for example, for heralded or fault-tolerant quantum communication protocols.Jean-Claude BesseSimone GasparinettiMichele C. CollodoTheo WalterAnts RemmJonas KrauseChristopher EichlerAndreas WallraffAmerican Physical SocietyarticlePhysicsQC1-999ENPhysical Review X, Vol 10, Iss 1, p 011046 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Jean-Claude Besse Simone Gasparinetti Michele C. Collodo Theo Walter Ants Remm Jonas Krause Christopher Eichler Andreas Wallraff Parity Detection of Propagating Microwave Fields
description	The parity of the number of elementary excitations present in a quantum system provides important insights into its physical properties. Parity measurements are used, for example, to tomographically reconstruct quantum states or to determine if the decay of an excitation has occurred, information that can be used for quantum error correction in computation or communication protocols. Here, we demonstrate a versatile parity detector for propagating microwaves, which distinguishes between radiation fields containing an even or odd number n of photons, both in a single-shot measurement and without perturbing the parity of the detected field. We showcase applications of the detector for direct Wigner tomography of propagating microwaves and heralded generation of Schrödinger cat states. This parity detection scheme is applicable over a broad frequency range and may prove useful, for example, for heralded or fault-tolerant quantum communication protocols.
format	article
author	Jean-Claude Besse Simone Gasparinetti Michele C. Collodo Theo Walter Ants Remm Jonas Krause Christopher Eichler Andreas Wallraff
author_facet	Jean-Claude Besse Simone Gasparinetti Michele C. Collodo Theo Walter Ants Remm Jonas Krause Christopher Eichler Andreas Wallraff
author_sort	Jean-Claude Besse
title	Parity Detection of Propagating Microwave Fields
title_short	Parity Detection of Propagating Microwave Fields
title_full	Parity Detection of Propagating Microwave Fields
title_fullStr	Parity Detection of Propagating Microwave Fields
title_full_unstemmed	Parity Detection of Propagating Microwave Fields
title_sort	parity detection of propagating microwave fields
publisher	American Physical Society
publishDate	2020
url	https://doaj.org/article/e7fb8a3b22054fc09e77304a73e59dc3
work_keys_str_mv	AT jeanclaudebesse paritydetectionofpropagatingmicrowavefields AT simonegasparinetti paritydetectionofpropagatingmicrowavefields AT micheleccollodo paritydetectionofpropagatingmicrowavefields AT theowalter paritydetectionofpropagatingmicrowavefields AT antsremm paritydetectionofpropagatingmicrowavefields AT jonaskrause paritydetectionofpropagatingmicrowavefields AT christophereichler paritydetectionofpropagatingmicrowavefields AT andreaswallraff paritydetectionofpropagatingmicrowavefields
_version_	1718394723165536256

Parity Detection of Propagating Microwave Fields

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