This ability to trap or release excitons based on temperature (or magnetic fields) is like flipping a magnetic switch. It reveals a powerful way to control the flow of information in quantum devices.
“Since the electronic, photonic, and spin degrees of freedom are strongly intertwined, switching between a magnetized and a non-magnetized state could serve as an extremely fast way to convert photon and spin-based quantum information,” noted Matthias Florian, a member of the research team.
The next step is information conversion
The study authors now aim to explore whether excitons can serve as a bridge for transferring quantum information between different physical systems. For example, can a message carried by an exciton be passed on to the spin of an electron?