6533b7dcfe1ef96bd12719b6

RESEARCH PRODUCT

Noise Figures of Merit of rf-SQUID-based Josephson Travelling Wave Parametric Amplifiers

L. FasoloC. BaroneM. BorghesiG. CarapellaA. P. CaricatoI. CarusottoA. CianD. Di GioacchinoE. EnricoP. FalferiM. FaverzaniE. FerriG. FilatrellaC. GattiA. GiacheroD. GiubertoniA. GrecoA. LeoC. LigiP. LivreriG. MaccarroneB. MargesinG. MaruccioR. MezzenaA. G. MonteduroA. NucciottiL. ObertoS. PaganoV. PierroL. PiersantiM. RajteriS. RizzatoA. Vinante

subject

Noise FigurePower GainJosephson Traveling Wave Parameter AmplifierSettore ING-INF/01 - Elettronica

description

The characterization of the rf-SQUID-based JTWPA in terms of its noise figure and gain for different input states (Fock states or Coherent states) has been carried out. The spectral distribution of the noise temperature Tn and gain G presents a region where the amplifier has a relatively high gain with a thermal noise that can go beyond the standard quantum limit =ℏ/2 (valid only for single mode input states [44]) as shown in Fig. 3. The TWJPA is here biased in its 3WM regime and pumped at p = 12 GHz.

yearjournalcountryeditionlanguage
2021-09-05
http://hdl.handle.net/10447/520963