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Interdisciplinary Fusion 2 (Unexplored Quantum Measurement Unit) Lab
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A research unit that uses the power of quantum physics to measure worlds that remain unseen.

AboutAbout the lab
Building quantum metrology to serve as humanity's new eyes
The Unexplored Quantum Metrology Unit is a research unit of the Science Collaboration and Exploration Center (SACRA), which is attached to the Graduate School of Science. It brings together experts from fields related to quantum technology and measurement to develop and apply "advanced quantum-wave measurement."
Alongside developing photon sources and detectors for frequency ranges that remain unexplored, the unit is advancing research and development on new algorithms for physical measurement, biological imaging, and spectroscopic measurement, as well as on large-scale data analysis using machine learning.
At the graduate level, research and education are carried out as the Interdisciplinary Fusion Course of the Graduate School of Science.
Key terms
- Quantum fluctuation
- The slight fluctuation that inevitably remains because of quantum mechanics
- Quark
- One of the smallest particles that make up protons and neutrons
ResearchResearch themes
The unit works on developing and applying advanced quantum-wave measurement that exploits quantum properties.
*Illustrative imageAdvancing measurement with the quantum fluctuations of light
The unit is clarifying the value of using the quantum fluctuations of light generated by high-brightness, wavelength-tunable light sources. It also collaborates with chemists and life scientists, aiming to incorporate quantum effects into state-of-the-art optical measurement.
*Illustrative imageInside the proton and advanced quantum detectors
The unit investigates how protons are formed from quarks and gluons through experiments at large accelerators. It develops detectors with high precision in time, position, and energy, and also uses them for cosmic-ray monitoring of volcanoes and soil.
*Illustrative imageSeeing cells with quantum light
Using ultrasensitive microscopes based on quantum optical measurement technology, the unit is developing techniques to evaluate cells without damaging them.
MembersFaculty
- Associate ProfessorYujiro Eto
- Associate ProfessorNatsuki Tomida
- Assistant ProfessorChigusa Okano
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Squeezer device (optical parameter oscillator), used in 2011 in initial experiments with squeezed light at the Hanford LIGO observatory - MIT Museum - Cambridge, MA - DSC09057” Daderot / CC0 (cropped)
- Advancing measurement with the quantum fluctuations of light: “Photon numbers squeezed vacuum” Gerd Breitenbach / CC BY-SA 3.0 (cropped)
- Inside the proton and advanced quantum detectors: “Proton Quark Structure” Bakeed / CC0 (cropped)
- Seeing cells with quantum light: “Quantum light squeezes the noise out of microscopy signals ( )” Oak Ridge National Laboratory / CC BY 2.0 (cropped)
- Related lab (学際融合1
(データ理学仮説創出ユニット) ): “Academic works by discipline over time (visualization of studies data in OpenAlex)” Shubhanshu Mishra made the first version which I then modified and the latest version is made anew / CC BY 4.0 (cropped) - Related lab (学際融合3
(地球と 生命の 共進化研究ユニット) ): “Geological time spiral” United States Geological Survey / Public domain (cropped)
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