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1. (WO2014197048) SUPERCONDUCTING THREE-TERMINAL DEVICE AND LOGIC GATES

Pub. No.:    WO/2014/197048    International Application No.:    PCT/US2014/023664
Publication Date: Fri Dec 12 00:59:59 CET 2014 International Filing Date: Wed Mar 12 00:59:59 CET 2014
IPC: H03K 19/195
Applicants: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
Inventors: MCCAUGHAN, Adam, N.
BERGGREN, Karl, K.
Title: SUPERCONDUCTING THREE-TERMINAL DEVICE AND LOGIC GATES
Abstract:
A three-terminal device that exhibits transistor-like functionality at cryogenic temperatures may be formed from a single layer of superconducting material. A main current-carrying channel of the device may be toggled between superconducting and normal conduction states by applying a control signal to a control terminal of the device. Critical- current suppression and device geometry are used to propagate a normal-conduction hotspot from a gate constriction across and along a portion of the main current-carrying channel. The three-terminal device may be used in various superconducting signal-processing circuitry.