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:
Oct. 28, 2008
Filed:
Aug. 15, 2005
Applicants:
Oleg Astafiev, Ibaraki, JP;
Yuri Pashkin, Ibaraki, JP;
Jaw-shen Tsai, Tokyo, JP;
Inventors:
Assignees:
Riken, Saitama, JP;
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/44 (2006.01); G11C 11/24 (2006.01); H03K 19/195 (2006.01); H03K 17/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A single electron-transistor is used to read out charge states of two coupled qubits formed by two Cooper pair boxes. Detection is made about a gate voltage shift of the peak of the current that flows in the single electron transistor in accordance with the charge states. Since the current peak position varies depending on the particular charge state, all four charge states can be independently measured, or read out.
Astafiev, Oleg. (2008). Method and circuit for reading quantum state (U.S. Patent No. 7443720). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7443720
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile