Recent rapid advances in optical science and optical quantum information processing have been fundamentally supported by progress in laser source technologies. In this laboratory, laser sources are not treated as given instruments; instead, we take the strategic design of light sources themselves as the starting point for expanding accessible research regimes.We develop ultrashort-pulse laser systems that simultaneously achieve high repetition rates, high average power, and low noise, through an integrated approach encompassing oscillator design, amplification, dispersion and phase control, and wavelength conversion. By constructing light sources optimized for specific experimental purposes, we enable access to strongly nonlinear regimes and high-efficiency generation of novel quantum states that are difficult to reach with conventional sources.Based on these advanced light sources, we further extend our research to nonlinear and quantum optics, photonic quantum information processing, and the exploration of new physical phenomena arising from quantum interactions between light and matter.Our laboratory aims not merely to develop laser sources, but to use them as a foundation for exploring previously inaccessible regimes of physics.

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