Publication Date: March 31, 2025
Authors:
Amita Gnanapandithan, Li Qian, and Hoi-Kwong Lo
Abstract:
Quantum protocols including quantum key distribution and blind quantum computing often require the preparation of quantum states of known dimensions. Here, we show that, rather surprisingly, hidden multidimensional modulation is often performed by practical devices. This violates the dimensional assumption in quantum protocols, thus creating side channels and security loopholes. Our work has important impacts on the security of quantum cryptographic protocols.
Related links:
Read this publication on the Physical Review Letters Website