Acoustic spectral hole-burning in a two-level system ensemble

Abstract Microscopic two-level system (TLS) defects at dielectric surfaces and interfaces are among the dominant sources of loss in superconducting quantum circuits, and their properties have been extensively probed using superconducting resonators and qubits. We report on spectroscopy of TLSs coupl...

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Autores principales:	G. Andersson, A. L. O. Bilobran, M. Scigliuzzo, M. M. de Lima, J. H. Cole, P. Delsing
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/ddb08fe8a66b45738e58c55d88a7c3e3
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id	oai:doaj.org-article:ddb08fe8a66b45738e58c55d88a7c3e3
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spelling	oai:doaj.org-article:ddb08fe8a66b45738e58c55d88a7c3e32021-12-02T13:57:39ZAcoustic spectral hole-burning in a two-level system ensemble10.1038/s41534-020-00348-02056-6387https://doaj.org/article/ddb08fe8a66b45738e58c55d88a7c3e32021-01-01T00:00:00Zhttps://doi.org/10.1038/s41534-020-00348-0https://doaj.org/toc/2056-6387Abstract Microscopic two-level system (TLS) defects at dielectric surfaces and interfaces are among the dominant sources of loss in superconducting quantum circuits, and their properties have been extensively probed using superconducting resonators and qubits. We report on spectroscopy of TLSs coupling to the strain field in a surface acoustic wave (SAW) resonator. The narrow free spectral range of the resonator allows for two-tone spectroscopy where a strong pump is applied at one resonance, while a weak signal is used to probe a different mode. We map the spectral hole burnt by the pump tone as a function of frequency and extract parameters of the TLS ensemble. Our results suggest that detuned acoustic pumping can be used to enhance the coherence of superconducting devices by saturating TLSs.G. AnderssonA. L. O. BilobranM. ScigliuzzoM. M. de LimaJ. H. ColeP. DelsingNature PortfolioarticlePhysicsQC1-999Electronic computers. Computer scienceQA75.5-76.95ENnpj Quantum Information, Vol 7, Iss 1, Pp 1-5 (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 G. Andersson A. L. O. Bilobran M. Scigliuzzo M. M. de Lima J. H. Cole P. Delsing Acoustic spectral hole-burning in a two-level system ensemble
description	Abstract Microscopic two-level system (TLS) defects at dielectric surfaces and interfaces are among the dominant sources of loss in superconducting quantum circuits, and their properties have been extensively probed using superconducting resonators and qubits. We report on spectroscopy of TLSs coupling to the strain field in a surface acoustic wave (SAW) resonator. The narrow free spectral range of the resonator allows for two-tone spectroscopy where a strong pump is applied at one resonance, while a weak signal is used to probe a different mode. We map the spectral hole burnt by the pump tone as a function of frequency and extract parameters of the TLS ensemble. Our results suggest that detuned acoustic pumping can be used to enhance the coherence of superconducting devices by saturating TLSs.
format	article
author	G. Andersson A. L. O. Bilobran M. Scigliuzzo M. M. de Lima J. H. Cole P. Delsing
author_facet	G. Andersson A. L. O. Bilobran M. Scigliuzzo M. M. de Lima J. H. Cole P. Delsing
author_sort	G. Andersson
title	Acoustic spectral hole-burning in a two-level system ensemble
title_short	Acoustic spectral hole-burning in a two-level system ensemble
title_full	Acoustic spectral hole-burning in a two-level system ensemble
title_fullStr	Acoustic spectral hole-burning in a two-level system ensemble
title_full_unstemmed	Acoustic spectral hole-burning in a two-level system ensemble
title_sort	acoustic spectral hole-burning in a two-level system ensemble
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/ddb08fe8a66b45738e58c55d88a7c3e3
work_keys_str_mv	AT gandersson acousticspectralholeburninginatwolevelsystemensemble AT alobilobran acousticspectralholeburninginatwolevelsystemensemble AT mscigliuzzo acousticspectralholeburninginatwolevelsystemensemble AT mmdelima acousticspectralholeburninginatwolevelsystemensemble AT jhcole acousticspectralholeburninginatwolevelsystemensemble AT pdelsing acousticspectralholeburninginatwolevelsystemensemble
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Acoustic spectral hole-burning in a two-level system ensemble

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