■ 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.
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
