A rudimentary quantum network link between Dutch cities
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Re: A rudimentary quantum network link between Dutch cities
#2the article: https://www.science.org/doi/10.1126/sciadv.adp6442
Re: A rudimentary quantum network link between Dutch cities
#3I've worked in quantum nonlinear optics during my first postdoc 12 years ago, and back then we could only dream of the efficiency of frequency conversions that are used here. So many advances in just a decade, and most of them don't even make the news.
Re: A rudimentary quantum network link between Dutch cities
#4Did you hear a cat just now?
Re: A rudimentary quantum network link between Dutch cities
#5[dead]
Re: A rudimentary quantum network link between Dutch cities
#6What is actually the usecase for "quantum internet"?
Like at most i hear about quantum key distribution, but quite frankly the classical equivalents to that are just as good if not better, so what is the actual benefit?
Re: A rudimentary quantum network link between Dutch cities
#7What is actually the usecase for "quantum internet"? Like at most i hear about quantum key distribution, but quite frankly the classical equivalents to that are just as good if not better, so what is the actual benefit?
What are the classical equivalents?
Re: A rudimentary quantum network link between Dutch cities
#8Re: A rudimentary quantum network link between Dutch cities
#9What is actually the usecase for "quantum internet"? Like at most i hear about quantum key distribution, but quite frankly the classical equivalents to that are just as good if not better, so what is the actual benefit?
I'm curious too! I'd immediately understand if it allows for speed of light communication wireless, but this is clearly wired, requiring more precision engineering than usual fibre.
Re: A rudimentary quantum network link between Dutch cities
#10What is actually the usecase for "quantum internet"? Like at most i hear about quantum key distribution, but quite frankly the classical equivalents to that are just as good if not better, so what is the actual benefit?
I'd prefer @ziofill to answer, but I think:
- security - if we use quantum entanglement/teleportation to the extent I've read about how it works, then even if you still need a fiber optic cable connecting the two parties, the data is unreadable if you're not looking at physically the same wave/photons, meaning that man in the middle attack (like the ones with bending an optic cable to break it's internal reflection) is literally impossible. The data in the middle would not be readable without the receiving end entangled device, and the other side would immediately know about the attack, because an identical signal would not be readable either, as it's not the same signal anymore.
- I think the ultimate promise is transferring data without a physical link of any kind in-between. Connect two atoms, manipulate one, read the other - like ansibles in LeGuin/O.S.Card fiction. Instant interplanetary communication (which, I think, fucks up the idea of time too?)