Toward metropolitan free-space quantum networks

https://phys.org/news/2023-10-metropolitan-free-space-quantum-networks.html

"central entanglement server stream 24/ 7 entangled photons 2 offices 300m apart... closed-loop stabilization... quantum receiver subsystem, commercial radio antennas... direct sunlight detected noise >400 kcp/s... night time quantum bit error rate <2%, average secure key rate of 5.4 Kbps... high-dimensional entanglement facilitates higher information capacity per photon, better security and robustness to noise... quantum key distribution, quantum clock synchronization and quantum cryptography"

Related:

Say hello to quantum networking startup Qunnect
https://www.laserfocusworld.com/fiber-optics/article/14300553/say-hello-to-quantum-networking-startup-qunnect

Securing telecoms networks for the post-quantum era
https://research.ibm.com/blog/quantum-safe-telecoms-ibm

Measuring improvement in the design of pulses for quantum systems
https://phys.org/news/2024-04-pulses-quantum.html