Quantum communication uses quantum states to transmit, share, or secure information between parties. It includes quantum key distribution, entanglement distribution, quantum teleportation, quantum repeaters, satellite quantum links, and network protocols for future quantum systems. Quantum communication relies on photons, single-photon sources, detectors, memories, fibers, free-space links, and protocols that use measurement disturbance and entanglement as information resources.
Quantum communication matters because it could enable new forms of secure communication and connect quantum processors, sensors, and memories into distributed quantum networks. Near-term systems focus on quantum key distribution and trusted-node or satellite links, while longer-term goals include entanglement-based networking and a quantum internet. Key challenges include loss, distance, detector efficiency, source quality, synchronization, quantum memories, and integration with classical networks. The field connects closely to quantum cryptography, quantum internet, and quantum photonics.
Conferences on quantum communication appear in quantum technology, photonics, communications, cryptography, physics, and nanotechnology programs. Sessions often cover QKD, entanglement distribution, quantum repeaters, satellite links, network protocols, and device security. Tracking quantum-communication events helps researchers follow the infrastructure being developed for secure and distributed quantum information systems.
To learn more, read our detailed glossary article on quantum communication.