Kim, Changhyun Kim, Hansol Moon, Sunghyun Jung, Hojoong Kwon, Hyounghan 2026-02-03T06:30:54Z 2026-02-03T06:30:54Z 2026-02-02 2025-12 https://pubs.kist.re.kr/handle/201004/154127 Integrated thin-film lithium niobate (TFLN) photonics has emerged as a powerful platform for quantum information science, offering its outstanding nonlinear, electro-optic (EO), and integration capabilities. In this review, we present the latest advances in TFLN-based integrated photonics tailored to quantum technologies. We first explore state-of-the-art quantum light sources realized in both straight waveguide and resonator configuration, including high-brightness photon pair generations, squeezed light, and versatile entanglement schemes. Next, we detail progress in integrated photonic processors, with a focus on programmable interferometric networks, ultrafast EO modulators, and essential passive components for photonic qubit processing. We then address critical challenges in optical interfacing and detection technologies, discussing recent innovations in low-loss fiber-to-chip and grating coupler designs, as well as the integration of on-chip single photon detectors. This review provides a forward-looking perspective on scalable quantum photonic systems that could underpin future advances in quantum communication, computing, and sensing. English Springer | Korea Nano Technology Research Society Integrated lithium niobate photonic devices for photonic quantum information science Article 10.1186/s40580-025-00530-0 1 Nano Convergence, v.12, no.1 Nano Convergence 12 1 Y scie scopus kci 001651731700001 2-s2.0-105026410553 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Science & Technology - Other Topics Materials Science Physics Review PASS 2ND-HARMONIC GENERATION FREQUENCY-CONVERSION GRATING COUPLER WAVE-GUIDES BROAD-BAND SQUEEZED STATES SILICON-NITRIDE EFFICIENCY ENTANGLEMENT OPTICS