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:
Jun. 15, 2021
Filed:
Jan. 19, 2021
Applicant:
Quantala Llc, Santa Barbara, CA (US);
Inventor:
John M. Martinis, Santa Barbara, CA (US);
Assignee:
Quantala LLC, Santa Barbara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 39/02 (2006.01); H01L 27/18 (2006.01); G06N 10/00 (2019.01); H01L 39/22 (2006.01);
U.S. Cl.
CPC ...
H01L 39/025 (2013.01); G06N 10/00 (2019.01); H01L 27/18 (2013.01); H01L 39/223 (2013.01);
Abstract
Error correction can only work with superconducting qubits if qubit errors are lowered. Surface loss from thin oxides is currently a dominant error mechanism. Formulas for useful qubit geometries are presented to predict surface loss, which can be used to optimize the qubit layout. A significant fraction of surface loss comes from the small wire that connects the Josephson junction to the qubit capacitor. Tapering this wire is shown to significantly lower its loss, as well as etching the underlying silicon to create free-standing wires.