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:
Nov. 08, 2016
Filed:
Nov. 11, 2015
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Toshio Oshima, Itabashi, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
The invention relates to a single-photon generator and a single-photon generating method, which theoretically makes it possible to precisely generate a single photon in real time. A three-level lambda system is formed of a coupled quantum dots group, which is a set of a number of coupled quantum dots where a couple of quantum dots having different ground quantum levels are coupled. The entirety is made in an exciton ground state through illumination with first excitation light. Then, the number of photons in the Raman scattering light through illumination with second excitation light is detected, and a single excited Dicke state is achieved. After that, a single photon is generated accompanying the transition from the single excited Dicke state to the exciton ground state through illumination with third excitation light.