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:
Jul. 24, 2012
Filed:
Aug. 11, 2008
Takuya Hirano, Toshima-ku, JP;
Yujiro Eto, Bunkyo-ku, JP;
Takuya Hirano, Toshima-ku, JP;
Yujiro Eto, Bunkyo-ku, JP;
Japan Science and Technology Agency, Saitama, JP;
The Gakushuin School Corporation, Tokyo, JP;
Abstract
A quantum entanglement generating system includes: a laser light source for producing a light beam of light frequency 2f; a ring interferometer comprising a beam splitter into which the light beam of light frequency 2fis incident and a plurality of mirrors, the beam splitter and the mirrors forming an optical path in the form of a ring; a parametric amplifier inserted in the optical path of the ring interferometer for producing a beam of light of light frequency fupon receiving the light beam of light frequency 2fincident into the optical parametric amplifier; and a dispersive medium inserted in the optical path of the ring interferometer for varying relative optical path length for the light beam of light frequency 2fand the light beam of light frequency f.