Chemistry

• Physical chemistry
• Applied physics
• Pathology
• Photoreceptor Protein
• Magnetic compass
• NMR
• MRI

 This project aims to elucidate how molecular structures and their fluctuations govern light energy conversion and to apply these insights to the development of advanced quantum sensing technologies. Many biological energy-conversion processes, such as photosynthesis, are driven by nanometer-scale structural changes. However, capturing critical transient states of these reactions is extremely challenging due to continuous molecular motion and changes in orientation.

 To overcome this limitation, we focus on electron spin—the intrinsic magnetic property of electrons—as a sensitive probe of molecular dynamics. By measuring spin polarization and correlating it with magnetic field orientation, we can analyze molecular alignment, geometry and dynamic behavior of radical and intermediate species. This approach enables ultra-high-resolution detection of transient states, providing essential insights into fundamental energy-conversion mechanisms.

 Our international collaboration focuses on three key research themes: (1) magnetoreception mechanisms, (2) spin-mediated photon up-conversion and (3) molecular vibrations governing spin dynamics in multi-qubit systems. These spin-based sensing technologies are directly applicable to magnetic field-based quantum sensing in biological environments.

 Furthermore, by extending this approach to nuclear magnetic resonance (NMR), we aim to detect minute fluctuations in fluid environments at the sensor–molecule interface. This capability has the potential to identify subtle pathological changes, paving the way for next-generation MRI technologies and contributing to the development of carbon-neutral energy conversion systems.