Abstract
We examine the application of Josephson radiation emitters to spectral calibration of single-photon- resolving detectors. Josephson junctions are patterned in a YBCO film on a bicrystal sapphire substrate and are voltage controlled to generate radiation in the frequency range of 0.05–1 THz. The detector used in this work consists of a gate-defined quantum-dot photon-to-charge transducer coupled to a single-electron transistor. Both the emitter and the detector are equipped with a matching on-chip wide-band antenna. The combination of a tuneable emitter and detector allows us to determine the efficacy of the YBCO emitter and also to analyze the elementary processes involved in the detection.
Original language | English |
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Article number | 024010 |
Pages (from-to) | 1-6 |
Number of pages | 6 |
Journal | Physical Review Applied |
Volume | 5 |
Issue number | 2 |
DOIs | |
Publication status | Published - 22 Feb 2016 |
Keywords
- terahertz
- Josephson Junctions
- QUANTUM DOTS
- SINGLE-ELECTRON TRANSISTOR