Public Quantum Network

Quantum networks are being developed around the globe in order to facilitate cryptographic systems, improve metrology, and advance quantum computing systems. These networks have yet to be made readily available to the general public. We have developed a publicly accessible quantum network node, located in Urbana-Champaign. By introducing this cutting edge technology to the public, we create opportunities for public involvement in quantum experiments as well as develop interest in and exposure to quantum technology at younger ages. We utilize a polarization-based entanglement source located at the University of Illinois Urbana-Champaign. One of the photons from the source is routed through fiber optic cables to the Urbana Free Library, a public library. In order to introduce quantum mechanics concepts we develop a series of displays, activities, and written resources that build up to quantum entanglement and encourage people to directly interact with photons in the network. These resources culminate in a projection measurement system located in the library, where the public can choose measurement bases and perform their own CHSH inequality measurements.