51社区黑料

Synopsis

As quantum devices, e.g., quantum processors and sensors, become more capable and advanced, applications that rely on networking of such devices also become ever more relevant. The scalability of quantum computers in particular is emerging as a bottleneck for quantum interconnects to solve. Meanwhile, long-range reach of quantum communication protocols, e.g., quantum key distribution, necessitates solutions to distribute quantum states over large distances. Those are some of the key motivations behind the development of increasingly complex and comprehensive quantum networks, boosted in recent years by major investments and initiatives across the globe. 

To build quantum networks, we must first develop the required components. These, in turn, depend on the particular application as well as the transmission channel and protocol for the quantum information. In my talk, I will highlight our efforts on several fronts to implement quantum networks and some of their key building blocks. This includes demonstrations of protocols over deployed fibre-optic channels and free-space ground to satellite links. As a key component for long-distance channels based on quantum repeaters, I will present our light-matter interfaces based on rare-earth ion-doped materials, with which we have recently demonstrated random-access optical storage and recall as well as memory-assisted microwave-to-optical wavelength transduction. If time permits, I will also discuss our efforts to study ultra-weak photon emission from biological systems as a non-invasive biomarker and a potential signature of optical signaling in biology.

Meeting ID: 881 0567 7442
Password: 080772