US 12,290,009 B2
Terahertz transistor
Christopher K. Walker, Tucson, AZ (US)
Assigned to Arizona Board of Regents on Behalf of the University of Arizona, Tucson, AZ (US)
Filed by Arizona Board of Regents on Behalf of University of Arizona, Tucson, AZ (US)
Filed on Apr. 28, 2020, as Appl. No. 16/860,839.
Application 16/860,839 is a continuation of application No. 15/600,036, filed on May 19, 2017, granted, now 10,636,955.
Claims priority of provisional application 62/339,384, filed on May 20, 2016.
Prior Publication US 2020/0259067 A1, Aug. 13, 2020
Int. Cl. H10N 60/20 (2023.01); H03B 15/00 (2006.01); H03K 19/195 (2006.01); H03K 19/20 (2006.01); H10N 60/35 (2023.01); H10N 60/85 (2023.01)
CPC H10N 60/207 (2023.02) [H03B 15/003 (2013.01); H03K 19/195 (2013.01); H03K 19/20 (2013.01); H10N 60/208 (2023.02); H10N 60/35 (2023.02); H10N 60/85 (2023.02)] 22 Claims
OG exemplary drawing
 
1. A superconducting Meissner effect transistor comprising:
a superconducting bridge between a first and a second current probe, wherein the superconducting bridge is continuous between the first and second current probe without a Josephson junction, the first and second current probe being electrically connected to a source and a drain electrical connection and having a superconducting current between the source and drain electrical connection, respectively, and wherein the superconducting bridge is adapted to include a plurality of Cooper pairs;
a magnet, external to the superconducting bridge, emitting a magnetic field bias having a bias strength (Ha) at the superconducting bridge,
wherein, each Cooper pair includes a pair of electrons having anti-parallel spins when the superconducting bridge is subjected to the bias strength (Ha); and
a control line having a time varying magnetic field signal emitted therefrom, the magnetic field signal having a signal strength Hsig at the superconducting bridge sufficient, in combination with the bias strength Ha, to align each of the spins of the electrons in at least a portion of the Cooper pairs such that the portion of the Cooper pairs are broken,
wherein the magnetic field signal has a signal frequency less than the inverse of a relaxation time τ0 of the superconducting bridge and the superconducting current is modulated at the signal frequency.