Basic Foundation Research

Low temperature torsion Pendulum-type
gravity gradiometer

Establishment of earthquake early alert methods using high-sensitivity gravity gradiometer

Representative Researcher:
ANDO Masaki, Associate Professor, Graduate School of Science, University of Tokyo

Overview

Detects gravity location change at the time of fault ruptures during large scale earthquakes using a gravity gradiometer network and builds systems to dispatch alarms at the early stages in the society

Complementing and synergy effects with the main project

Development of torsion pendulum-type sensors to contribute to platforms of quantum calculation and sensing

Integration of photon-number-resolving
detector and quantum light circuit

Development of photon-number-resolving quantum nano-photonics

Representative Researcher:
EDAMATSU Keiichi, Professor, Research Institute of Electrical Communication, Tohoku University

Overview

Develops quantum light sources with a deterministic photon-number state with high quantum coherence and develops photon-number-resolving detectors that identify and detect photon numbers with extremely high accuracy and quantum efficiency, thereby boosting performance of quantum measurement using quantum properties of photons

Complementing and synergy effects with the main project

Improvement in quantum light sources and detection technologies lead to the development of quantum measurements and sensing using photons

Schematic diagram of a Bose-Einstein
condensate spatial magnetometer

Development of quantum atomic magnetometer with dual quantum noise squeezing

Representative Researcher:
SHIBATA Kosuke, Assistant Professor, Physics Division, Department of Science, Gakushuin University

Overview

In a magnetometer using a Bose-Einstein condensate, compression of both of atomic spin quantum noise and photon noise is conducted, realizing magnetic field sensitivity better than the conventional limit.

Complementing and synergy effects with the main project

Basic knowledge on quantum magnetic sensors makes a contribution to the improvement of performance of solid quantum sensors.

Principles of 2D quantum spectroscopy

Development of Spectroscopic techniques based on cutting-edge quantum optics toward elucidating functions of complex molecular systems

Representative Researcher:
SHIMIZU Ryosuke, Professor, Graduate School of Informatics and Engineering, The University of Electro-Communications

Overview

In addition to the proposal and proof of principle of 2D quantum spectroscopy to extract quantum entanglement information in time-frequency regions of two photons, clarification of the physical functions of useful complicated molecular systems such as photosynthesis is conducted

Complementing and synergy effects with the main project

Substantiates 2D quantum spectroscopy, new quantum measurement technologies, thereby contributing to the platforms of quantum measurement and sensing

Image of infrared quantum absorption spectroscopy

Research on quantum sensing devices using quantum entangled photons

Representative Researcher:
TAKEUCHI Shigeki, Professor, Graduate School of Engineering, Kyoto University

Overview

Develops quantum sensing devices using frequency-correlated quantum entangled photons. In particular, the realization of high-sensitivity infrared absorption spectrometers just using visible light detectors based on the infrared quantum absorption spectroscopy using quantum entangled light.

Complementing and synergy effects with the main project

Development of new sensor technologies using quantum entangled light to make a contribution to platforms of quantum measurement and sensing

Defects which disturb formation
of high-quality NV centers

Material science of complex defects for highly-sensitive quantum sensors

Representative Researcher:
TERAJI Tokuyuki, Chief Researcher, Research Center for Functional Materials, National Institute for Materials Science

Overview

Development of single-crystal diamond formulation methods that contribute to quantum sensing, building of defect formation scientific principles for high-density high-quality complex defects formation, and creation of diamond NV centers with high-magnetic sensitivity

Complementing and synergy effects with the main project

Advanced crystal growth and evaluation technologies are implemented to obtain high-quality diamond NV centers and improve the fabrication technologies of solid quantum sensors

Light-pulse atom interferometry

Development of next generation high-performance inertial quantum sensors

Representative Researcher:
NAKAGAWA Ken’ichi, Professor, Institute for Laser Science, University of Electro-Communications

Overview

We develop the basic technologies to improve the sensitivity of atomic interferometers by using quantum controls of external motion of atoms, and realize substantial miniaturization of existing inertial quantum sensor systems

Complementing and synergy effects with the main project

Knowledge relating to the improvement of sensitivity of inertial quantum sensors makes a contribution to platforms of quantum measurement and sensing