Group Seminar 2022/23
- Date
- Wednesday 14 June 2023, 14:00-15:00
- Location
- Bragg SR (GR.25)
- Speaker
- Dr Kaveh Delfanazari
- Institution
- Electronics and Nanoscale Engineering Division, James Watt School of Engineering, University of Glasgow
- Title
- Chip-integrated Superconducting Coherent Millimetre-Waves and Terahertz Devices
- Category
- Group Seminar
Abstract:
Current compact and coherent source and receiver technologies are generally inefficient and
impractical at millimetres (mm)-waves and terahertz (THz) frequencies between 0.1 and 10
THz. We develop voltage-tunable chip-integrated continuous waves (cw) and pulse coherent
light sources based on Josephson junctions in layered and metallic superconducting nanoscale
devices and circuits.
In this lecture, I will first discuss the fundamental physics of the cw/pulse coherent light
radiation from Josephson junctions emitters [1,2]. I will continue with an introduction to the
superconducting mm- and THz waves device micro- and nanofabrication, and their on-chip
integration [3]. I will conclude by demonstrating results on the potential applications of
superconducting coherent light sources in cutting-edge technologies [4].
[1] K. Delfanazari, et al. Optics Express, 21 (2), 2171-2184 (2013),
[2] K. Delfanazari, et al. Proceedings of the IEEE, 108 (5), 721-734 (2020),
[3] T. Kashiwagi, et al. Physical Review Applied, 4 (5), 054018 (2015),
[4] M. Tsujimoto, K Delfanazari, et al. arXiv:2305.14643