Quantum Photonics Hardware Research Team

Mission

We develop scalable quantum photonics hardware platforms that enable future quantum technologies. By combining nanofabrication, precision photonic engineering, and quantum measurement science, we create the key optical components and evaluation technologies required for photonic, neutral-atom, and trapped-ion quantum computing.

Overview

The Quantum Photonics Hardware Research Team at G-QuAT is dedicated to building the photonic hardware foundation for next-generation quantum information technologies. Our research spans the complete lifecycle of advanced quantum photonic devices—from design and fabrication to characterization and system-level validation.
We develop integrated photonic circuits based on thin-film lithium niobate (TFLN) and silicon photonics, quantum light sources including optical frequency combs and squeezed-light sources, and high-performance photon-number-resolving detectors based on transition-edge sensors (TES).
Supported by advanced photonic-electronic measurement platforms and high-throughput wafer-scale testing capabilities, we aim to accelerate the transition of quantum technologies from laboratory demonstrations to scalable and deployable systems in collaboration with industry and national quantum programs.

Research Areas

Team Members (As of July. 1st, 2026)

Photo	Affiliation / Position and Name	Field of Expertise
	Team Leader Chiharu URANO	Precision Measurement Science Using Quantum Devices
	Invited Senior Researcher Koji YAMADA	Integrated photonic devices and photonic integrated circuits
	Senior Researcher Takahiro KIKUCHI	Fabrication of photon-number-resolving detectors, development of multiplexed readout technologies for large-scale multi-pixel systems, and applications of large-scale detector arrays
	Senior Researcher Tetsuya TSURUTA	Development of photon-number-resolving detectors, establishment of high-accuracy performance characterization techniques, and creation of next-generation photonic detector devices
	Researcher Tomohiro ISHIKAWA	Photonic integrated circuits, optical frequency comb sources, and squeezed-light sources based on thin-film lithium niobate (TFLN)
	Researcher Nao KOMINATO	Photonic integrated circuits, optical frequency comb sources, and squeezed-light sources based on thin-film lithium niobate (TFLN)
	Concurrent post Nobu-Hisa KANEKO	Leads quantum measurement and hardware evaluation; specializes in condensed‑matter standards and studies applications of Josephson and quantum Hall effects.
	Concurrent post Daiji FUKUDA	Nonclassical light sources, quantum state generation, and superconducting TES-based quantum photodetection.
	Concurrent post Junya KURUMIDA	tandardizationof quantum photonic technologies ／Quantum optical networks
	Concurrent post Rai KOU-TAKAHASHI	Approaches photonic and quantum technologies from materials and heterogeneous integration perspectives. Specializes in advanced packaging technologies by micro-transfer printing.
	Concurrent post Ryotaro KONOIKE	Photonic integrated circuits based on Silicon photonics, Optical switches, and Optical Computing devices.
	Concurrent post Daiki YAMASHITA	Single-photon sources and machine learning using photonic integrated circuits
	Concurrent post Masaki YUMOTO	Mid-infrared tunable laser sources, nonlinear frequency conversion, and trace gas sensing.