Jon T Yard

US Patent:

20180129966, May 10, 2018

Filed:

Apr 5, 2016

Appl. No.:

15/565413

Inventors:

- Redmond WA, US
Jon Yard - Seattle WA, US

Assignee:

Microsoft Technology Licensing, LLC - Redmond WA

International Classification:

G06N 99/00
G06F 17/16

Abstract:

Quantum circuits are synthesized based on a projective gate set derived from a set of single-qubit gates, typically a basis set such as the Clifford+T gates or the V-gates. An initial projective gate set is used to determine at least one characteristic of a quaternion algebra, and the quaternion algebra is used to define a new projective gate set. Exactly synthesizable unitaries are identified, and a circuit approximating a target unitary is defined in the single-qubit gate set by mapping from the new projective gate set.

US Patent:

20150222619, Aug 6, 2015

Filed:

Aug 16, 2013

Appl. No.:

14/424295

Inventors:

- Los Alamos NM, US
Charles Glen Peterson - Los Alamos NM, US
James T. Thrasher - Baltimore MD, US
Jane E. Nordholt - Los Alamos NM, US
Jon T. Yard - Santa Barbara CA, US
Raymond Thorson Newell - Santa Fe NM, US
Rolando D. Somma - Santa Fe NM, US

Assignee:

LOS ALAMOS NATIONAL SECURITY, LLC - Los Alamos NM

International Classification:

H04L 29/06
H04L 9/08
H04L 9/32
G06F 21/31

Abstract:

Multi-factor authentication using quantum communication (“QC”) includes stages for enrollment and identification. For example, a user enrolls for multi-factor authentication that uses QC with a trusted authority. The trusted authority transmits device factor information associated with a user device (such as a hash function) and user factor information associated with the user (such as an encrypted version of a user password). The user device receives and stores the device factor information and user factor information. For multi-factor authentication that uses QC, the user device retrieves its stored device factor information and user factor information, then transmits the user factor information to the trusted authority, which also retrieves its stored device factor information. The user device and trusted authority use the device factor information and user factor information (more specifically, information such as a user password that is the basis of the user factor information) in multi-factor authentication that uses QC.