Channel Estimation for Reconfigurable Intelligent Surface-Aided 6G NOMA Systems: A Quantum Machine Learning Approach. - Nhien Q. T. Thoong; Adnan Ahmad Cheema; Berk Canberk; Dung Thanh Tran; Octavia A. Dobre; Trung Q. Duong (IEEE Trans. Netw. Sci. Eng., 2026)