Quantum networks: Back and forth are not equal distances!

(University of Copenhagen - Niels Bohr Institute) Quantum technology based on light (photons) has great potential for radically new information technology based on photonic circuits. Now researchers from the Niels Bohr Institute, University of Copenhagen have discovered a new type of photonic channels, where back and forth are not equal distances! Such a system has been a missing component for building quantum photonic circuits on a large scale.