Photo-System Physics

SASAKI Keiji Laboratory, RIES, Hokudai

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Laboatory of Photo-System Physics

Our goal is to unveil and understand the underlying physics of light-matter interactions and to develop new applications for optical observation and measurements, optical manipulation, and optical information processing. We investigate cutting-edge photonic systems and related scientific fields including nano-optics, quantum optics, and photo-molecular chemistry.


Optical Selection and Sorting of Nanoparticles according to Quantum Mechanical Properties

H. Fujiwara, K. Yamaguchi, T. Wada, H. Ishihara and K. Sasaki: Science Advances 7, eabe9551 (2021).

Nanoscale Color Sorting of Surface Plasmons in a Double-Nanogap Structure with Multipolar Plasmon Excitation

Y. Tanaka, M. Komatsu, H. Fujiwara, and K. Sasaki: Nano Letters 15, 7086–7090 (2015).

Nanostructured Potential of Optical Trapping Using a Plasmonic Nanoblock Pair

Y. Tanaka, S. Kaneda, and K. Sasaki: Nano Letters 13, 2146-2150 (2013).

Beating the standard quantum limit with four-entangled photons

T. Nagata, R. Okamoto, J. O'Brien, K. Sasaki, and S. Takeuchi: Science 316, 726–729 (2007).

Optical Trapping of a Metal-Particle and a Water Droplet by a Scanning Laser-Beam

K. Sasaki, M. Koshioka, H. Misawa, N. Kitamura, and H. Masuhara: Applied Physics Letters 60, 807–809 (1992).