Arrays of high-temperature superconductor Josephson junctions for quantum voltage noise source
Alexander Klushin, Igor Gordiychuk, Samuel Benz
We have investigated arrays of bicrystal Josephson junctions for possible application in a quantized voltage noise source. In order to reduce the intrinsically high 100-150 GHz characteristic frequency of bicrystal junctions to the low 5 GHz drive frequency of the digital pulse-drive signal used in this source, we examined different designs where gold films deposited on top of the YBCO films were used to shunt the junctions. From the dc characteristics we observe a 10-fold decrease in the characteristic frequency as compared with that of the unshunted junctions. We discuss methods to further decrease of the characteristic frequency to achieve the 5 GHz target frequency.
International Superconductive Electronics Conference - Extended Abstracts
September 5-9, 2005
International Superconductive Electronics Conference
, Gordiychuk, I.
and Benz, S.
Arrays of high-temperature superconductor Josephson junctions for quantum voltage noise source, International Superconductive Electronics Conference - Extended Abstracts, Noordwijkerhout, NL, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=32019
(Accessed December 8, 2023)