Quantum Photonics at ICFO: using crystals for quantum memory
We speak to Professor Hugues de Riedmatten about quantum cryptography protocols and storing quantum states in crystals doped with praseodymium ions. The ions are so well isolated from the system that a quantum state mapped from entangled photons can be stored in the crystals for several hours. For more on the latest developments in quantum information processing using nanomaterials, visit the Nanotechnology focus collection at http://iopscience.iop.org/journal/095...