Quantum key distribution implemented with d-level time-bin entangled photons

Quantum key distribution implemented with d-level time-bin entangled photons High-dimensional photon states (qudits) are pivotal to enhance the information capacity, noise robustness, and data rates of quantum communications. Time-bin entangled qudits are promising candidates for implementing high-dimensional quantum communications over optical fiber networks with processing rates approaching those of classical telecommunications. However, their use is hindered by phase instability, timing inac...