Tetsushi Tanamoto Laboratory
Tetsushi Tanamoto Laboratory

Tetsushi Tanamoto

■ Background
We are entering the quantum era. Research on superconducting qubits is progressing, but research on familiar semiconductors has problems such as integration. Security will also be important in the quantum era. Research on system security such as quantum cryptography is progressing, but I think that research on security of quantum devices is yet to come.

■ Goal
We theoretically aim to realize quantum annealing machines and quantum computers using semiconductor LSIs. We will also theoretically consider the security technology required for quantum devices.

■ Method
We will tackle the above problems from both condensed matter theory and electrical circuit simulation approaches. For graduation research and master's thesis, you will mainly simulate electric circuits. Basically, the simulation is performed by adding a model that adds new physical elements to the electric circuit, so if you are interested, you will proceed with your research while acquiring new knowledge each time. Of course, you can also tackle the problem of solid-state physics.

Basic Information

Faculty name/Affiliation Tetsushi Tanamoto / Department of Information and Electronic Engineering, Faculty of Science and Engineering
Specialized Fields Quantum engineering
Research theme Quantum annealing machine / quantum computer simulation
Faculty introduction URL https://www3.med.teikyo-u.ac.jp/profile/ja.e196121c2237f6c1.html

Our Research

Quantum annealing machine / quantum computer simulation

As semiconductors become finer, electrons are confined in a narrow space and can be counted one by one (single electron phenomenon). Quantum computers make effective use of this single-electron phenomenon. We pursue a circuit operation that is supposed to be used in a quantum system, and take a theoretical approach through simulation.

Quantum security

There are various security methods that utilize element variations in semiconductor technology, and we will examine these quantum versions through simulations.

Papers and Conferences Presentation

Paper presentation

Title Laboratory Contents
Simulation of delayed buses in a dumpling state and analysis of maximum waiting time using logistic regression Tetsushi Tanamoto Laboratory detail

Title Laboratory Contents
Five and three quantum dot systems as apparatuses for measuring energy levels Tetsushi Tanamoto Laboratory detail
SPICE compact model of controlling electrons of spin qubits using FinFET Tetsushi Tanamoto Laboratory detail
Classical SPICE simulation of superconducting quantum circuits Tetsushi Tanamoto Laboratory detail

Title Laboratory Contents
Compact spin qubits using the common gate structure of fin field-effect transistors Tetsushi Tanamoto Laboratory detail
Simulations of hybrid charge-sensing single-electron-transistors and CMOS circuits Tetsushi Tanamoto Laboratory detail

Title Laboratory Contents
SPICE Simulation of 32-kHz crystal-oscillator operation based on Si tunnel FET Tetsushi Tanamoto Laboratory detail
Impact of Switching Voltage on Complementary Steep-Slope Tunnel Field Effect Transistor Circuits Tetsushi Tanamoto Laboratory detail
Generation of all-to-all connections in a two-dimensional qubit array with two-body interactions Tetsushi Tanamoto Laboratory detail

Title Laboratory Contents
Application of single-electron effects to fingerprints of chips using image recognition algorithms Tetsushi Tanamoto Laboratory detail
Reservoir Computing on Spin-Torque Oscillator Array Tetsushi Tanamoto Laboratory detail

Conference presentation

Title Society name Laboratory Contents
SPICE compact model of spin qubits using FinFET focusing on single electron tunneling 2022 International Conference on Solid State Devices and Materials (SSDM2022) Tetsushi Tanamoto Laboratory detail
[Invited Talk] Spin qubit readout single-electron circuit simulation using CMOS The Institute of Electronics, Information and Communication Engineers Silicon Materials and Devices (SDM) Tetsushi Tanamoto Laboratory detail
[16a-A403-7] Proposal of SPICE compact model for electron number control of FinFET spin qubits 2023 The 70th JSAP Spring Meeting Tetsushi Tanamoto Laboratory detail
[24aD1-5]Theoretical consideration of multi-quantum dot system as a quantum level measurement system using Green's function method 2023 Spring Meeting of the Physical Society of Japan Tetsushi Tanamoto Laboratory detail

Title Society name Laboratory Contents
[12p-N303-1] [Note lecture] Proposal of a spin quantum bit with a common gate by using FinFET 82nd Physical Society of Japan Academic Lecture in Fall 2021 Tetsushi Tanamoto Laboratory detail
[E-PS-4-01] Conductance calculation in compact spin qubits of FinFET 24th International Conference on Electronic Properties of Two-Dimensional Systems (EP2DS-24) Tetsushi Tanamoto Laboratory detail
(Invited) Theoretical study on spin qubit integration based on conventional transistors 11TH WORKSHOP ON SEMICONDUCTOR / SUPERCONDUCTOR QUANTUM COHERENCE EFFECT AND QUANTUM INFORMATION Tetsushi Tanamoto Laboratory detail
(Invited) Silicon Quantum Annealing Machines Using Conventional CMOS Devices IEEE EDS Electron Devices Technology and Manufacturing (EDTM) conference 2022 Tetsushi Tanamoto Laboratory detail
[23a E307 5] The simulation of electronic circuit to read out spin quantum bit by using CMOS 69th Applied Physics Academic Lecture in Spring 2022   Tetsushi Tanamoto Laboratory detail

Title Society name Laboratory Contents
Analysis using machine learning for bus delay problems The 68th Physical Society Spring Academic Lecture 2021 (Online) Shelf book laboratory detail
Generation of all-to-all connections in a two-dimensional qubit array with two-body interactions American Physical Society March Meeting 2021 Shelf book laboratory detail

Title Society name Laboratory Contents
[Invited Lecture] Proposal of quantitative annealing machine using general-purpose memory Society of Electronics, Information and Communication Engineers, Silicon Materials and Devices Study Group (SDM) Tetsushi Tanamoto Laboratory detail

Introducing the FacultyThis section introduces details about the research and the passionate thoughts around the research.

Introduction of Professor Tanamoto

Discover the fascinating and untold stories behind the cutting-edge research being conducted by our esteemed professors. Get an in-depth look at the motivations and passions driving their work, and learn how their findings are making a real impact on society. Don't miss the opportunity to gain a deeper understanding of the amazing work being done right here at our laboratory!

Introduction of Tetsushi Tanamoto