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:
Dec. 16, 2025

Filed:

Sep. 28, 2021
Applicant:

Psiquantum, Corp., Palo Alto, CA (US);

Inventors:

Vimal Kamineni, Mechanicville, NY (US);

Nicholas V. Licausi, Watervliet, NY (US);

Ann Melnichuk, Rio Rancho, NM (US);

James Jay Mcmahon, Clifton Park, NY (US);

Henrik Johansson, Wilton, NY (US);

Alexey Vert, Clifton Park, NY (US);

Assignee:

PsiQuantum, Corp., Palo Alto, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 15/24 (2006.01); G01J 1/44 (2006.01); G01J 5/0818 (2022.01); G01R 13/02 (2006.01); G02F 1/035 (2006.01); H10F 39/10 (2025.01); H10F 77/14 (2025.01);
U.S. Cl.
CPC ...
G01R 15/242 (2013.01); G01J 1/44 (2013.01); G01J 5/0818 (2013.01); G01R 13/0281 (2013.01); G02F 1/035 (2013.01); H10F 39/107 (2025.01); H10F 77/1437 (2025.01); G01J 2001/442 (2013.01);
Abstract

A photonic integrated circuit including a substrate, a plurality of oxide layers on the substrate, and various passive and active integrated optical components in the plurality of oxide layers. The integrated optical components include silicon nitride waveguides, a Pockets effect phase shifter (e.g., BaTiOphase shifter), a superconductive nanowire single photon detector (SNSPD), an optical isolation structure surrounding the SNSPD, a single photon generator, a thermal isolation structure, a heater, a temperature sensor, a photodiode for data communication (e.g., a Ge photodiode), or a combination thereof.


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