On the Tsukuba Quantum Day, we will hold a series of seminars to promote exchanges among people who are researching quantum science and quantum information science at the University of Tsukuba. Since it is the beginning of the academic year, we hope that the seminar lecturers will devise a seminar that is understandable to students who have just joined our laboratory, and we hope that the seminar will promote active research exchange. Anyone who is interested is welcome to attend.