Investigation of the Performance of NbN Superconducting HEB Mixers of Different Critical Temperatures
| Autor: | R. Lefevre, Q.J. Yao, K. M. Zhou, Sheng-Cai Shi, Wei Miao, Wen-Ying Duan, Yan Delorme, Wen Zhang, Ke Zhang, Huijuan Gao |
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| Přispěvatelé: | Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2017 |
| Předmět: |
Physics
Superconductivity Noise temperature Niobium nitride Condensed matter physics Noise measurement Phonon Bolometer 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Temperature measurement Electronic Optical and Magnetic Materials law.invention chemistry.chemical_compound chemistry Intermediate frequency law 0103 physical sciences Electrical and Electronic Engineering [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] 010306 general physics 0210 nano-technology |
| Zdroj: | IEEE Transactions on Applied Superconductivity IEEE Transactions on Applied Superconductivity, 2017, 27 (4), pp.1-4. ⟨10.1109/TASC.2016.2630040⟩ |
| ISSN: | 1558-2515 1051-8223 |
| DOI: | 10.1109/tasc.2016.2630040 |
| Popis: | In this paper, we investigate the critical temperature dependence of the performance of niobium nitride superconducting hot electron bolometer (HEB) mixers. The input noise temperature and intermediate frequency (IF) noise bandwidth of superconducting HEB mixers of different critical temperatures $T_{c}$ (between 6 and 12 K) are simulated with a hot spot model. Simulation results show that the mixer input noise temperature is the lowest at $T_{c}$ approximately equal to 7–9.5 K and the IF noise bandwidth increases with $T_{c}$ . We also measure three superconducting HEB mixers of different critical temperatures (i.e., 7.5, 8.8, and 10.3 K) at 0.85 and 1.3 THz. An agreement between measurement and prediction is observed. |
| Databáze: | OpenAIRE |
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