Schematic illustration of cluster quantum microcombs.

On-Chip Quantum Entanglement: 60-Mode Cluster States

Chinese researchers achieved a groundbreaking advance in quantum photonics by generating a massive 60-mode entangled cluster state directly on a chip using optical microresonators and a multi-laser pump technique, creating high-quality quantum entanglement that could revolutionize chip-based quantum computers, secure communications, and advanced sensors.