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:
May. 08, 2012
Filed:
Dec. 10, 2008
Keiichi Edamatsu, Natori, JP;
Ryosuke Shimizu, Sendai, JP;
Shigehiro Nagano, Fujisawa, JP;
Japan Science and Technology Agency, Saitama, JP;
Abstract
A non-degenerate polarization-entangled photon pair generation device () that efficiently and easily generates non-degenerate polarization-entangled photon pairs includes: a quantum-entangled photon pair generator () including a single crystal in which periodically poled structures () having different periods are formed; and a light radiating unit () for entering light into the quantum-entangled photon pair generator () such that the light passes through the periodically poled structure () and then through the periodically poled structure (). A period of the periodically poled structure () is different from a period of the periodically poled structure () such that a parabola indicative of a relation between an emission angle and a wavelength of a polarized photon emitted based on light incident on the periodically poled structure () comes into contact with a parabola indicative of a relation between an emission angle and a wavelength of polarized photon emitted based on light incident on the periodically poled structure (), within an allowable range under a phase matching condition.
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