Cisco's prototype controller schedules quantum entanglement on request, for networks where 1,000 nodes wired point to point need nearly 500,000 links. Software scheduling is Cisco's route to quantum networks larger than a handful of nodes, and the controller doing it is still a research prototype.
Reality
- Evidence40
- Adoption8
- Hype gap+20
- Incentives60
- Confidence45
Physicists at The City College of New York used the layered magnet CrSBr to convert microwave signals into an optical output over roughly 300 megahertz of bandwidth. Moving a single quantum state is the step still ahead.
Reality
- Evidence55
- Adoption5
- Hype gap+20
- Incentives30
- Confidence58
Physicists at the City College of New York drove magnons in CrSBr with microwaves and read the signal out on reflected laser light, a conversion mechanism that still needs large efficiency gains before it can move quantum states.
Reality
- Evidence62
- Adoption
- Insufficient
- Hype gap+18
- Incentives60
- Confidence55
The Sorbonne and Geneva groups each built entangled-photon sources to run the same 2022 anonymous voting protocol, and each published in Physical Review Letters. Between them they counted twelve ballots.
Reality
- Evidence62
- Adoption8
- Hype gap+18
- Incentives60
- Confidence55
Brookhaven says its Quantum Lighthouse is the first permanent free-space optical link on the network. The 13-mile air hop is running; the 30-mile crossing to Yale is still pending.
Reality
- Evidence42
- Adoption22
- Hype gap+32
- Incentives74
- Confidence48
The open-air hop carried entangled pairs only at night, and each end needed a purpose-built rooftop terminal. What it buys is wavelengths that telecom fiber does not serve.
Reality
- Evidence32
- Adoption12
- Hype gap+22
- Incentives58
- Confidence38