Welcome to IMR International Workshop
The Institute for Materials Research (IMR, “KINKEN”) at Tohoku University holds several international symposia/workshops each year. This workshop focuses on molecular spin qubits (MSQs). IMR is one of the Japanese institutes that researches cutting-edge “materials and physical properties” such as metallic materials, alloys, various oxide materials, ceramics, semiconductor materials, hydrogen storage materials, nuclear materials, biomaterials, spintronics materials for next-generation materials, electron-strongly correlated materials, optical device materials, organic materials, and so on. It is a top-class institute in Japan that specializes in materials and physical properties. Since Dr. Kotaro Honda, the first director of the institute, invented the first industrially producible “KS magnet” in 1916, various kinds of materials and science have been developed. Spintronics and spin quantum phenomena are among these. We look forward to having the world's top researchers gather and discuss this theme in this symposium. We welcome Prof. Masahiro Yamashita, who is an emeritus professor at Tohoku University, as a Honorary Chair for “1 st International Conference on Molecular Spin Qubits toward Quantum Computer and Sensor” (ICMSQ2025). On behalf of the organizing committee, welcome to IMR International Workshop 2025, and welcome to IMR, Tohoku University.
URL: http://www.imr.tohoku.ac.jp/en/
Deputy Director of Institute for Materials Research, Tohoku University
Hitoshi Miyasaka
(Chairman of ICMSQ2025)
Concept of ICMSQ2025
Classical bits are composed of 0 and 1, while quantum bits (Qubits) are composed of the superposition of 0 and 1(ψ = a|0> + b|1>). Qubits are very promising for quantum computer and quantum sensors. So far, several qubits are realized by using superconducting loops, photons, quantum dots, trapped atoms, nitrogen vacancies in diamond, etc. They have some advantages and disadvantages for the real application. More recently, molecular spin qubits are considered to be the next-generation candidate of qubits, because of (1) Spin phase control by pulse ESR, (2) High spin-polarization of electron spin, and (3) High molecular designability. However, the demerit is the short lifetime of superposition T2 (T2: spin-spin relaxation time). The boundary condition is 2T1 > T2 (T1: spin-lattice relaxation time). Therefore, we must lengthen the T1 and T2 and, moreover realize the room temperature performance with long coherence of the molecular spin qubits for real application by using the molecular designs, the crystal lattice designs, etc. The ESR-STM approach should be improved for the real application as well.
In this international conference (ICMSQ2025), we will discuss about the recent progress and perspectives on the molecular spin qubits for quantum computer and quantum sensors by inviting the young and senior scientists from all over the world as the invited speakers.
Emeritus Professor, Tohoku University
Masahiro Yamashita
(Honorary Chairman of ICMSQ2025)