QiSci, Quantum Information Science Initiative, is a amazing group in The University of Queensland, Australia which researches quantum information. Michael Nielsen is one of faculties in this group who wrote "Quantum Computation and Quantum Information" with Isaac Chuang, the former IBM researcher and the professor in MIT now.
About applying for The UQ
The UQ, however, has some different graduate school system like honour program from that in korean universities so that it is not expected that I could apply for and get admission to it without any concerns. There are coursework master and research master of Ph. D program separately, and I am not able to apply for Ph. D program without honour or master degree.