Welcome to Ozawa group at Advanced Institute for Materials Research (AIMR) in Tohoku University! We are a theoretical physics research group, studying an intersection between condensed matter physics and atomic, molecular, and optical physics.
October 26, 2022: Ryo's collaboration paper on surface plasmon is now on arXiv! arXiv:2210.13637
October 25, 2022: We proposed a model in which non-Hermitian topological energy spectrum is induced by inter-particle interactions, and the paper is now published in Physical Review Letters! Phys. Rev. Lett. 129, 180401 (2022)
October 14, 2022: A paper in which we propose a connection alternative to the Berry connection, which we call the singular connection, is now on arXiv! We discuss its relation to optical transitions and the shift vector. arXiv:2210.06844
October 11, 2022: Enrico joined the group as a Visiting Scientist. He is a PhD student from the University of Birmingham. Welcome, Enrico!
May 18, 2022: Bruno's new paper on quantum metric of degenerate bands is now on arXiv: arXiv:2205.07900
May 12, 2022: A paper on measurement of Quantum Fisher information is published in npj Quantum Information. The experiment is done in Huazhong University of Science and Technology.
May 6, 2022: A paper on the measurement of the adiabatic non-Hermitian Berry phase is now on arXiv! This work is a collaboration with Gadway group from UIUC and Price group from Birmingham. arXiv:2205.02700
April 18, 2022: Research of the group is featured in this month's issue of a Japanese magazine Yano E plus.
April 1, 2022: Ryo and Greta joined the group! Bill and Bruno finally arrived at Japan to properly join the group! Welcome all!
Here is the full member list of the group.
March 31, 2022: Ken left the group to become Postdoctoral Researcher at RIKEN!
March 2, 2022: New paper on band structures under periodic non-Hermitian potentials is on arXiv: arXiv:2203.00247
February 1, 2022: Bruno joined the group. Welcome Bruno!
May 31, 2021: New paper on realization of a synthetic dimension in a silicon ring-resonator is now on arXiv: arXiv:2105.13742. This is an experimental work done in collaboration with Yokohama National University and the University of Tokyo.