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:
Oct. 19, 2021
Filed:
May. 28, 2020
Microsoft Technology Licensing, Llc, Redmond, WA (US);
Dmitry Pikulin, Redmond, WA (US);
Mason L Thomas, Santa Barbara, CA (US);
Chetan Vasudeo Nayak, Santa Barbara, CA (US);
Roman Mykolayovych Lutchyn, Santa Barbara, CA (US);
Georg Wolfgang Winkler, Santa Barbara, CA (US);
Sebastian Heedt, Wuerselen, DE;
Gijsbertus De Lange, Zoetermeer, NL;
Bernard Van Heck, Rotterdam, NL;
Esteban Adrian Martinez, Copenhagen, DK;
Lucas Casparis, Copenhagen, DK;
Torsten Karzig, Goleta, CA (US);
Microsoft Technology Licensing, LLC, Redmond, WA (US);
Abstract
A method to evaluate a semiconductor-superconductor heterojunction for use in a qubit register of a topological quantum computer includes measuring a radio-frequency (RF) junction admittance of the semiconductor-superconductor heterojunction to obtain mapping data; finding by analysis of the mapping data one or more regions of a parameter space consistent with an unbroken topological phase of the semiconductor-superconductor heterojunction; measuring a sub-RF conductance including a non-local conductance of the semiconductor-superconductor heterojunction in each of the one or more regions of the parameter space, to obtain refinement data; and finding by analysis of the refinement data a boundary of the unbroken topological phase in the parameter space and a topological gap of the semiconductor-superconductor heterojunction for at least one of the one or more regions of the parameter space.