Strong coupling of magnons in a YIG sphere to photons in a planar superconducting resonator in the quantum limit.
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...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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Nature Publishing Group
2017
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| _version_ | 1797089494963322880 |
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| author | Morris, RGE van Loo, AF Kosen, S Karenowska, AD |
| author_facet | Morris, RGE van Loo, AF Kosen, S Karenowska, AD |
| author_sort | Morris, RGE |
| collection | OXFORD |
| description | 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. |
| first_indexed | 2024-03-07T03:04:54Z |
| format | Journal article |
| id | oxford-uuid:b22acaa0-7f27-48cd-bfa4-ad096c59ac14 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T03:04:54Z |
| publishDate | 2017 |
| publisher | Nature Publishing Group |
| record_format | dspace |
| spelling | oxford-uuid:b22acaa0-7f27-48cd-bfa4-ad096c59ac142022-03-27T04:09:48ZStrong coupling of magnons in a YIG sphere to photons in a planar superconducting resonator in the quantum limit.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:b22acaa0-7f27-48cd-bfa4-ad096c59ac14EnglishSymplectic Elements at OxfordNature Publishing Group2017Morris, RGEvan Loo, AFKosen, SKarenowska, ADWe 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. |
| spellingShingle | Morris, RGE van Loo, AF Kosen, S Karenowska, AD Strong coupling of magnons in a YIG sphere to photons in a planar superconducting resonator in the quantum limit. |
| title | Strong coupling of magnons in a YIG sphere to photons in a planar superconducting resonator in the quantum limit. |
| title_full | Strong coupling of magnons in a YIG sphere to photons in a planar superconducting resonator in the quantum limit. |
| title_fullStr | Strong coupling of magnons in a YIG sphere to photons in a planar superconducting resonator in the quantum limit. |
| title_full_unstemmed | Strong coupling of magnons in a YIG sphere to photons in a planar superconducting resonator in the quantum limit. |
| title_short | Strong coupling of magnons in a YIG sphere to photons in a planar superconducting resonator in the quantum limit. |
| title_sort | strong coupling of magnons in a yig sphere to photons in a planar superconducting resonator in the quantum limit |
| work_keys_str_mv | AT morrisrge strongcouplingofmagnonsinayigspheretophotonsinaplanarsuperconductingresonatorinthequantumlimit AT vanlooaf strongcouplingofmagnonsinayigspheretophotonsinaplanarsuperconductingresonatorinthequantumlimit AT kosens strongcouplingofmagnonsinayigspheretophotonsinaplanarsuperconductingresonatorinthequantumlimit AT karenowskaad strongcouplingofmagnonsinayigspheretophotonsinaplanarsuperconductingresonatorinthequantumlimit |