Self-resetting single flux-quantum microwave photodetector

Joonas Govenius (Inventor), Juha Hassel (Inventor)

Research output: PatentPatent


The disclosure relates to a quantum detector configured to receive a microwave signal from a microwave source (47, 57). The quantum detector comprises a main element (34, 44, 54) formed by a main Josephson junction and a Josephson transmission line which is coupled to the main element for outputting a measurement signal. The Josephson transmission line comprises at least a first set (31, 41, 51) of JTL elements and a second set (32, 42, 52) of JTL elements. The Josephson junction in each JTL element in the first (31, 41, 51) set is weakly damped, and the JTL elements in the second set (32, 42, 52) are more strongly damped than the JTL elements in the first set (31, 41,51).

Patent family as of 29.12.2021
FI129128 B 20210730 FI20200005115 20200204      
FI20205115 A 20210730 FI20200005115 20200204      
WO21156538 A1 20210812 WO2021FI50046 20210125

Link to current patent family on right 

Original languageEnglish
Patent numberFI129128
IPCH04B 10/ 70 A I
Priority date4/02/20
Publication statusPublished - 30 Jul 2021
MoE publication typeH1 Granted patent


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