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Field demonstration of a self-contained 10 km mobile-to-ground quantum network node via common-aperture co-propagation
Dongkyu Kim, Dong-Gil Im, Kyungdeuk Park +4
In this work, we demonstrate a dual-function, common-aperture free-space optical system that simultaneously supports decoy-state BB84 quantum key distribution (QKD) at 803 nm and b…
Quantum key distribution over a 2 km free-space channel with a high secure key rate
Kyungdeuk Park, Dongkyu Kim, Dong-Gil Im +4
Free-space quantum key distribution (QKD) provides crucial advantages, including mobility and deployment exibility, for securing next-generation communication networks. However, at…
Spectrally engineered collinear type-0 SPDC source with enhanced spectral brightness for entanglement distribution
Dong-Gil Im, Jungmo Lee, Kyungdeuk Park +3
Entangled photon sources with high spectral brightness are important resources for photonic quantum information processing, particularly in quantum communication and quantum networ…
Robust Generation of Topological Biphoton Mode via Adiabatic Passage
Jaesung Lim, Jihwan Kim, Dong-Gil Im +4
Topological waveguide arrays support robust mode propagation in the presence of fabrication imperfections, providing a significant advantage for on-chip quantum information process…