Coplanar cavity for strong coupling between photons and magnons in van der Waals antiferromagnet
Abstract
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Dec 28, 2020
- Source ID
- 10.1063/5.0029112
Entities
People
- John Jesudasan
- Lucky N Kapoor
- Mandar M Deshmukh
- Pratap Raychaudhuri
- Sanat Ghosh
- Soham Manni
- Supriya Mandal
- Thamizhavel Arumugam
- Vibhor Singh
Organizations
- Department of Atomic Energy
- Department of Science and Technology
- Indian Institute of Science, Bengaluru
- Indian Institute of Technology Palakkad
- Nano Mission Council, Department of Science and Technology
- Office of Naval Research Global
- Tata Institute of Fundamental Research