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. 20, 1992
Filed:
Sep. 06, 1991
Applicant:
Inventor:
Kazuhito Fujii, Atsugi, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
357 16 ; 357 22 ; 357 30 ;
Abstract
A quantum interference device includes a source, a drain and waveguides with quantum structures between the source and the drain. An electron wave from the source that is confined in the waveguides is split into plural electron waves. The phase difference between the split electron waves is controlled and the split electron waves are combined into a single electron wave. The combined electron wave is directed to the drain or out of the waveguides according to an energy state of the combined electron wave by a real space transfer such as a tunneling effect. The phase difference control may be achieved by varying an electric field, a magnetic field, or light.