Agency for Defense Development

Dohoon Lim

Yong Sup Ihn

Dongkyu Kim

Kyungdeuk Park

Yonggi Jo

Nam Hun Park

Jung Mo Lee

Dong Gil Im

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.

Multi-mode pump laser based multi-wavelength entangled photon pair generation device and quantum key distribution network configuration method using the same

A quantum source includes: a quantum source generator dividing a pump beam into a plurality of channels and generating a plurality of signals and a plurality of idlers using nonlinear crystals respectively located optical paths of the plurality of channels; and an entangled photon pair combiner outputting an enhanced signal by combining the plurality of signals and outputting an enhanced idler by combining the plurality of idlers.

High-brightness quantum source based on multi-wavelength combination via arrayed Type-0 ppKTP crystal and method of generating entangled photon pairs

Growing community of inventors

Daejeon, South Korea

Dohoon Lim