Terahertz transistor
AssigneeArizona Board of Regents on Behalf of the University of Arizona
InventorChristopher K. Walker
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Abstract
Superconducting Meissner effect transistors, methods of modulating, and systems are disclosed. In one aspect a disclosed transistor includes a superconducting bridge between a first and a second current probe, the first and second current probe being electrically connected to a source and a drain electrical connection, respectively and a control line configured to emit a magnetic field signal having signal strength Hsig at the superconducting bridge. In one aspect the emitted magnetic field is configured to break Cooper pairs in the superconducting bridge.
Claims22
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.
Dependencies are inferred from the claim text.