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:
Aug. 12, 2025
Filed:
May. 28, 2025
Agency for Defense Development, Daejeon, KR;
Yong Sup Ihn, Daejeon, KR;
Dongkyu Kim, Daejeon, KR;
Kyungdeuk Park, Daejeon, KR;
Dong Gil Im, Daejeon, KR;
Yonggi Jo, Daejeon, KR;
Nam Hun Park, Daejeon, KR;
Dohoon Lim, Daejeon, KR;
Jung Mo Lee, Daejeon, KR;
AGENCY FOR DEFENSE DEVELOPMENT, Daejeon, KR;
Abstract
A multi-wavelength entangled photon pair generation device includes: a multi-mode pump laser that radiates a broadband pump laser beam in an ultraviolet wavelength range including multiple Gaussian-distributed wavelengths; a nonlinear crystal that generates a multi-wavelength de-multiplexed entangled photon pair in a near-infrared wavelength range including multiple wavelength components corresponding to multiple Gaussian-distributed wavelengths of the broadband pump laser beam, respectively; a temperature controller that adjusts a temperature of the nonlinear crystal; and an output optical system that filters out the broadband pump laser beam from light output through the nonlinear crystal and passes the multi-wavelength de-multiplexed entangled photon pair.