Journal article
Strong coupling of magnons in a YIG sphere to photons in a planar superconducting resonator in the quantum limit.
- Abstract:
- We report measurements made at millikelvin temperatures of a superconducting coplanar waveguide resonator (CPWR) coupled to a sphere of yttrium-iron garnet. Systems hybridising collective spin excitations with microwave photons have recently attracted interest for their potential quantum information applications. In this experiment the non-uniform microwave field of the CPWR allows coupling to be achieved to many different magnon modes in the sphere. Calculations of the relative coupling strength of different mode families in the sphere to the CPWR are used to successfully identify the magnon modes and their frequencies. The measurements are extended to the quantum limit by reducing the drive power until, on average, less than one photon is present in the CPWR. Investigating the time-dependent response of the system to square pulses, oscillations in the output signal at the mode splitting frequency are observed. These results demonstrate the feasibility of future experiments combining magnonic elements with planar superconducting quantum devices.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 1.8MB, Terms of use)
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- Publisher copy:
- 10.1038/s41598-017-11835-4
Authors
- Publisher:
- Nature Publishing Group
- Journal:
- Scientific Reports More from this journal
- Volume:
- 7
- Issue:
- 1
- Pages:
- 11511
- Publication date:
- 2017-09-01
- Acceptance date:
- 2017-08-31
- DOI:
- EISSN:
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2045-2322
- ISSN:
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2045-2322
- Pmid:
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28912482
- Language:
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English
- Keywords:
- Pubs id:
-
pubs:730055
- UUID:
-
uuid:b22acaa0-7f27-48cd-bfa4-ad096c59ac14
- Local pid:
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pubs:730055
- Source identifiers:
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730055
- Deposit date:
-
2018-01-27
Terms of use
- Copyright holder:
- Karenowska et al
- Copyright date:
- 2017
- Notes:
- © The Author(s) 2017. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
- Licence:
- CC Attribution (CC BY)
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