Extreme quantum nonlinearity in superfluid thin-film surface waves

Abstract We show that highly confined superfluid films are extremely nonlinear mechanical resonators, offering the prospect to realize a mechanical qubit. Specifically, we consider third-sound surface waves, with nonlinearities introduced by the van der Waals interaction with the substrate. Confinin...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Y. L. Sfendla, C. G. Baker, G. I. Harris, L. Tian, R. A. Harrison, W. P. Bowen
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/e9cca7171b614162898c7181b37c03f5
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:e9cca7171b614162898c7181b37c03f5
record_format	dspace
spelling	oai:doaj.org-article:e9cca7171b614162898c7181b37c03f52021-12-02T17:33:03ZExtreme quantum nonlinearity in superfluid thin-film surface waves10.1038/s41534-021-00393-32056-6387https://doaj.org/article/e9cca7171b614162898c7181b37c03f52021-04-01T00:00:00Zhttps://doi.org/10.1038/s41534-021-00393-3https://doaj.org/toc/2056-6387Abstract We show that highly confined superfluid films are extremely nonlinear mechanical resonators, offering the prospect to realize a mechanical qubit. Specifically, we consider third-sound surface waves, with nonlinearities introduced by the van der Waals interaction with the substrate. Confining these waves to a disk, we derive analytic expressions for the cubic and quartic nonlinearities and determine the resonance frequency shifts they introduce. We predict single-phonon shifts that are three orders of magnitude larger than in current state-of-the-art nonlinear resonators. Combined with the exquisitely low intrinsic dissipation of superfluid helium and the strongly suppressed acoustic radiation loss in phononic crystal cavities, we predict that this could allow blockade interactions between phonons as well as two-level-system-like behavior. Our work provides a pathway towards extreme mechanical nonlinearities, and towards quantum devices that use mechanical resonators as qubits.Y. L. SfendlaC. G. BakerG. I. HarrisL. TianR. A. HarrisonW. P. BowenNature PortfolioarticlePhysicsQC1-999Electronic computers. Computer scienceQA75.5-76.95ENnpj Quantum Information, Vol 7, Iss 1, Pp 1-12 (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 Y. L. Sfendla C. G. Baker G. I. Harris L. Tian R. A. Harrison W. P. Bowen Extreme quantum nonlinearity in superfluid thin-film surface waves
description	Abstract We show that highly confined superfluid films are extremely nonlinear mechanical resonators, offering the prospect to realize a mechanical qubit. Specifically, we consider third-sound surface waves, with nonlinearities introduced by the van der Waals interaction with the substrate. Confining these waves to a disk, we derive analytic expressions for the cubic and quartic nonlinearities and determine the resonance frequency shifts they introduce. We predict single-phonon shifts that are three orders of magnitude larger than in current state-of-the-art nonlinear resonators. Combined with the exquisitely low intrinsic dissipation of superfluid helium and the strongly suppressed acoustic radiation loss in phononic crystal cavities, we predict that this could allow blockade interactions between phonons as well as two-level-system-like behavior. Our work provides a pathway towards extreme mechanical nonlinearities, and towards quantum devices that use mechanical resonators as qubits.
format	article
author	Y. L. Sfendla C. G. Baker G. I. Harris L. Tian R. A. Harrison W. P. Bowen
author_facet	Y. L. Sfendla C. G. Baker G. I. Harris L. Tian R. A. Harrison W. P. Bowen
author_sort	Y. L. Sfendla
title	Extreme quantum nonlinearity in superfluid thin-film surface waves
title_short	Extreme quantum nonlinearity in superfluid thin-film surface waves
title_full	Extreme quantum nonlinearity in superfluid thin-film surface waves
title_fullStr	Extreme quantum nonlinearity in superfluid thin-film surface waves
title_full_unstemmed	Extreme quantum nonlinearity in superfluid thin-film surface waves
title_sort	extreme quantum nonlinearity in superfluid thin-film surface waves
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/e9cca7171b614162898c7181b37c03f5
work_keys_str_mv	AT ylsfendla extremequantumnonlinearityinsuperfluidthinfilmsurfacewaves AT cgbaker extremequantumnonlinearityinsuperfluidthinfilmsurfacewaves AT giharris extremequantumnonlinearityinsuperfluidthinfilmsurfacewaves AT ltian extremequantumnonlinearityinsuperfluidthinfilmsurfacewaves AT raharrison extremequantumnonlinearityinsuperfluidthinfilmsurfacewaves AT wpbowen extremequantumnonlinearityinsuperfluidthinfilmsurfacewaves
_version_	1718380096289505280

Extreme quantum nonlinearity in superfluid thin-film surface waves

Ejemplares similares