Research report 2017 - Max Planck Institute of Quantum Optics
Quantum gates for photons
Max-Planck-Institut für Quantenoptik, Garching
SummaryQuantum cryptography makes secure communication possible today, but with existing technology is limited to less than 100 km. A quantum repeater could overcome this limitation in principle but has not been built yet. We follow two different experimental approaches toward a photon-photon quantum gate, which is an essential component needed for a quantum repeater.