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Quantum Hardware Components R&D Team

  • Create a roadmap of large-scale quantum computers and their parts and components designed for next generation industrial applications.
  • Through the roadmap activity, involve parts and component suppliers including SMEs, foster part and component development, expand markets, and reduce costs.
  • Promote the development of parts and components used in quantum computers and sensors, and evaluation system for low-temperature characteristics of them. Encourage the international standardization for the evaluation methods and the shapes and structures of the parts and components.
  • Assist companies in commercializing their products for parts and components and strengthening their supply chains by offering fee-based evaluation and certificate testing services.

    • Team Research Theme

    Development of quantum hardware components for quantum computers and sensors

    We establish a one-stop testbed for quantum hardware components at G-QuAT. Based on our national standards, hardware components, e.g., amplifiers, RF components, cables, semiconductor and superconductor circuits, optical components will be evaluated at appropriate conditions of temperature: 10 mK to 300 K (at specific temperature points or with temperature gradient). Various parameters to be evaluated include but not limited to S parameters at frequencies up to 67 GHz, and thermal and optical properties. The conditions will be set by the companies demands and evaluation results will be utilized by the companies to enhance their values and to accelerate their R&D. We are actively involved in collaborations with industry and academic partners.

    Fig.1: Reaction at Electrode Catalyst

    Staff Members

    photo position & name field of expertise and other info
    Team Leader,
    Nobu-Hisa KANEKO    		 Material science/physics and its applications to quantum standards and sensors. His interests include but not limited to research of macroscopic quantum effects e.g., the Josephson effect, the quantum Hall effect, and the single electron tunneling effect and their applications. At G-QuAT, he has been working on quantum measurements and sensing and evaluation of quantum hardware components.  
    Chief Senior Researcher,
    Shuji NAKAMURA    		 Quantum Metrology Triangle experiment ; Quantum current standard with single electron device ; Circuit QED experiment with defect centers ; Circuit QED experiment with SIN junction  
    Senior Researcher,
    Junta IGARASHI    		 Nanofabrication; Characterization of spintronics device (magnetic tunnel junction); Characterization of magnetic thin film using optical method. At G-QuAT, he has been working on evaluation of microwave components and materials at cryogenic temperatures. Detail
    Researcher,
    Shota NORIMOTO    		 Single-electron operation using semiconductor device and application. Shota, especially, worked on development of current standard derived from elementary charge e and frequency f. He is assigned to electrical and thermal transport  
    Senior Researcher,
    Tetsuya TSURUTA    		 Engaged in research and development of photon-number-resolving detectors using superconducting transition edge sensors (TES). Focused on establishing quantitative evaluation methods for photon-number-resolving capability, while developing high-performance photon-number-resolving detectors for quantum computing, including optical quantum computers, and exploring TES applications in minimally invasive bioimaging.  
    Visiting Researcher,
    Koji YAMADA    		 He has been engaged in comprehensive R&D of integrated silicon photonics, from devices to applications, and establishing a foundry system. His present interest is integrated photonics for quantum applications. He also has much experiences in particle accelerators for synchrotron radiation, application of high energy electron beams, and radiation safety.  
    Concurrent post,
    Daiji FUKUDA    		 My expertise lies in the development of nonclassical light sources and optical quantum detection technologies. I work on the generation and characterization of squeezed light and non-Gaussian states, as well as the development of superconducting transition-edge sensors used as quantum projective measurement devices. I am also responsible for exploring industrial applications that leverage the quantum properties of such light. Detail
    Concurrent post,
    Seitaro KON    		 Research on measurement technologies using microwaves and millimeter waves, and their sensor applications.  
    Concurrent post,
    Tomonori ARAKAWA    		 Condensed matter physics and its applications based on the development of original measurement techniques. He is particularly specialized in low-temperature and high-frequency technologies, and conducts research on two-dimensional electronic, magnetic, and dielectric materials. At G-QuAT, he has been working on the evaluation of high-frequency components and materials.  
    Concurrent post,
    Takahiro KIKUCHI    		 Transition Edge Sensors (TESs), Microwave-multiplexed SQUIDs for TES readout, Applications with TESs  
    Research Assistant,
    Takeshi JODOI    		 Transition Edge Sensors (TESs), Applications with TES  
    Research Assistant,
    Kouki SHIROTA    		 He is responsible for developing quantum bio-imaging technology that employs transition-edge sensor (TES) single-photon detectors. He also creates FPGA-based signal-processing algorithms for TES readout and advance other applied optical measurement techniques that leverage TES devices.  
    Research Assistant,
    Daichi SUGIYAMA    		 Farication of a Quantu Circuit Refrigerator using superconductor, normal metal, Insulator and performance evaluation in a coupled quantum system.  
    Dispatched Researcher,
    Susumu KOUTA    		 He assists in the development of cryogenic measurement techniques.  

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