The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 18, 2021
Filed:
Apr. 15, 2020
Psiquantum Corp, Palo Alto, CA (US);
Chia-Jung Chung, Sunnyvale, CA (US);
Faraz Najafi, Palo Alto, CA (US);
George Kovall, Campbell, CA (US);
Vitor R. Manfrinato, San Jose, CA (US);
Vimal Kamineni, Mechanicville, NY (US);
Mark Thompson, Palo Alto, CA (US);
Syrus Ziai, Los Altos, CA (US);
PSIQUANTUM CORP., Palo Alto, CA (US);
Abstract
A superconductor device according to some embodiments comprises a superconductor stack, which includes a superconductor layer and a silicon cap layer over the superconductor layer, the cap layer including amorphous silicon. The superconductor device further comprises a metal contact over a portion of the silicon cap layer and electrically-coupled to the superconductor layer. The metal contact comprises a core including a first metal, and an outer layer around the core that includes a second metal. The portion of the silicon cap layer is converted from silicon to a conductive compound including the second metal to provide low-resistance electrical coupling between the superconductor layer and the metal contact. The superconductor device further comprises a waveguide, and the first portion of the cap layer under the metal contact is at a sufficient lateral distance from the waveguide to prevent optical coupling between the metal contact and the waveguide.