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.

Date of Patent:
Jan. 14, 2025

Filed:

May. 12, 2023
Applicant:

Seeqc, Inc., Elmsford, NY (US);

Inventors:

Alex Kirichenko, Elmsford, NY (US);

Maxim Vavilov, Elmsford, NY (US);

Oleg Mukhanov, Elmsford, NY (US);

Assignee:

SEEQC, INC., Elmsford, NY (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 17/92 (2006.01); H03K 3/38 (2006.01);
U.S. Cl.
CPC ...
H03K 17/92 (2013.01); H03K 3/38 (2013.01);
Abstract

A superconducting controller for a superconducting qubit to execute high fidelity quantum gates using magnetic flux drive. The controller comprises: an inductance forming an inductive loop and configured to be inductively coupled to a qubit with a small mutual inductance; a pulse shaping circuit configured to apply a current pulse with a predefined shape across the inductance. The pulse shaping circuit comprises: a superconducting circuit configured to output single flux quanta (SFQ) pulses and a digital counter circuit configured to produce the shape of the current (magnetic flux) pulse by controlling the number of SFQ pulses applied to the inductive loop by incrementing or decrementing the current across the inductance by one SFQ pulse at a time.


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