Diversity and multiplexing in quantum MIMO channels Junaid ur Rehman, Leonardo Oleynik, Seid Koudia, Mert Bayraktar and Symeon Chatzinotas EPJ Quantum Technol., 12 1 (2025) 18 Published online: 10 February 2025 DOI: 10.1140/epjqt/s40507-025-00324-7