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Coplanar cavity for strong coupling between photons and magnons in van der Waals antiferromagnet

Mandal, S and Kapoor, LN and Ghosh, S and Jesudasan, J and Manni, S and Thamizhavel, A and Raychaudhuri, P and Singh, V and Deshmukh, MM (2020) Coplanar cavity for strong coupling between photons and magnons in van der Waals antiferromagnet. In: Applied Physics Letters, 117 (26).

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Official URL: https://dx.doi.org/10.1063/5.0029112


We investigate the performance of niobium nitride superconducting coplanar waveguide resonators toward realizing hybrid quantum devices with magnon-photon coupling. We find internal quality factors � 20 000 at 20 mK base temperature, in zero magnetic field. We find that by reducing film thickness below 100 nm, an internal quality factor greater than 1000 can be maintained up to a parallel magnetic field of �1 T and a perpendicular magnetic field of �100 mT. We further demonstrate strong coupling of microwave photons in these resonators with magnons in chromium trichloride, a van der Waals antiferromagnet, which shows that these cavities serve as a good platform for studying magnon-photon coupling in 2D magnonics based hybrid quantum systems. We demonstrate strong magnon-photon coupling for both optical and acoustic magnon modes of an antiferromagnet. © 2020 Author(s).

Item Type: Journal Article
Publication: Applied Physics Letters
Publisher: American Institute of Physics Inc.
Additional Information: Copyright to this article belongs to American Institute of Physics Inc.
Keywords: Acoustic resonators; Antiferromagnetic materials; Chromium compounds; Coplanar waveguides; Magnetic fields; Microwave resonators; Niobium compounds; Superconducting devices; Superconducting resonators; Van der Waals forces, Antiferromagnets; Base temperature; Internal quality factors; Microwave photon; Parallel magnetic field; Perpendicular magnetic fields; Waveguide resonators; Zero magnetic fields, Photons
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 01 Feb 2021 11:26
Last Modified: 01 Feb 2021 11:26
URI: http://eprints.iisc.ac.in/id/eprint/67829

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