Title : On-Chip Quantum Science: Photonic Integrated Circuits for Nonlinear and Quantum Technologies
일시 : 2026년 5월 19일 (화), 17시
장소 : 아산이학관 433호
Speaker : 서민교 (KAIST 물리학과)
Abstracts:
Modern quantum science and technology increasingly rely on our ability to precisely control light at the micro- and nanoscale. While early quantum optics experiments were built from bulk optical components, recent advances in photonic integrated circuits (PICs) are enabling compact, stable, and scalable implementations of complex optical systems on a chip. By integrating waveguides, resonators, and nonlinear materials within a unified platform, PICs provide powerful tools for generating, manipulating, and measuring quantum states of light. Among emerging material systems, thin-film lithium niobate (TFLN) has attracted particular attention due to its strong second-order nonlinearity and electro-optic tunability, allowing efficient frequency conversion, photon-pair generation, and dynamic control within highly integrated architectures. In this colloquium, I will present a broad overview of PIC-based quantum science and technology, spanning nonlinear frequency combs, integrated non-classical light sources, and high-dimensional quantum state engineering, and introduce our laboratory’s recent efforts toward high-Q TFLN micro-resonator platforms and their potential for scalable and programmable quantum photonic systems.