Millimeter Wave Induced Josephson Voltage Steps above 1.0 Volt with a 1474 Junctions Array | NIST

Franz H. Mueller, Ralf Behr, Ruediger Wendisch +3 more

Charles J. Burroughs, Samuel P. Benz, Todd E. Harvey +1 more

Y. Murayama, Yasuhiro Sakamoto, Akio Iwasa +4 more

An array of 20144 Josephson junctions divided into four strip line branches has been developed and tested. The array generates quantized voltages up to about 14 V under millimeter-wave irradiation of 90 mW at 92.5 GHz, and will be used in a 10-V voltage standard.>

Yoshito Fukumoto, Ichiro Shigaki, Rikuo Ogawa +1 more

Akira Kawakami, Zhen Wang, Paul Winning +1 more

J. Niemeyer, Johann Heyen Hinken, Richard L. Kautz

It is demonstrated that a series array of 1474 Josephson junctions can produce quantized voltages up to 1.2 V when driven by microwaves at 90 GHz in the absence of a dc bias. This result brings closer the possibility of a practical Josephson voltage standard at the 1-V level.