David H Mckay

US Patent:

20210305480, Sep 30, 2021

Filed:

Mar 25, 2020

Appl. No.:

16/829439

Inventors:

- Armonk NY, US
Devendra K. Sadana - Pleasantville NY, US
David C. McKay - Ossining NY, US
Jared Barney Hertzberg - Yorktown Heights NY, US
Stephen W. Bedell - Wappingers Falls NY, US
Ning Li - White Plains NY, US

International Classification:

H01L 39/02
G06N 10/00
H01L 29/66
H01L 39/22

Abstract:

Systems and techniques that facilitate quantum tuning via permanent magnetic flux elements are provided. In various embodiments, a system can comprise a qubit device. In various aspects, the system can further comprise a permanent magnet having a first magnetic flux, wherein an operational frequency of the qubit device is based on the first magnetic flux. In various instances, the system can further comprise an electromagnet having a second magnetic flux that tunes the first magnetic flux. In various cases, the permanent magnet can comprise a nanoparticle magnet. In various embodiments, the nanoparticle magnet can comprise manganese nanoparticles embedded in a silicon matrix. In various aspects, the system can further comprise an electrode that applies an electric current to the nanoparticle magnet in a presence of the second magnetic flux, thereby changing a strength of the first magnetic flux.

US Patent:

20200006832, Jan 2, 2020

Filed:

Jun 27, 2018

Appl. No.:

16/020401

Inventors:

- Armonk NY, US
Salvatore Bernardo Olivadese - Stamford CT, US
Robert Meinel - Briarcliff Manor NY, US
Christopher Surovic - Carmel NY, US
Raymond A. Watters - Clintondale NY, US
Jerry M. Chow - White Plains NY, US
Jay M. Gambetta - Yorktown Heights NY, US
David C. Mckay - Ossining NY, US

International Classification:

H01P 1/22
H01P 11/00
H01P 5/02
G06N 99/00

Abstract:

The technology described herein is directed towards microwave attenuators, and more particularly to a cryogenic microwave attenuator device for quantum technologies. In some embodiments, a device can comprise a cryogenic microwave attenuator device. The cryogenic microwave attenuator device can comprise: a housing component and a microwave attenuator chip, wherein the housing component can have thermal conductivity of about at least 0.1 Watts per meter-Kelvin at 1 degree Kelvin. The cryogenic microwave attenuator device can also comprise a microwave connector comprising a signal conductor that is direct wire coupled to the microwave attenuator chip.