Oxford scientists achieve teleportation with quantum supercomputer
Breakthrough brings quantum computing closer to large-scale practical use
🖖🏾
Important note: this is about quantum teleportation. They transferred data between two quantum computers without a cable or wifi. Teleporting matter, let alone matter in useful quantities is far off.
That's not entirely correct, they did use a fiber optic cable to transfer the data, as the more detailed article linked in another comment states. Quantum entanglement itself can't be used to transfer data; you still need to send the entangled particles through some physical means.
Yes, I got really excited, wondering if they'd solved reassembly.
Clickbait and a borderline-lie.
Quantum teleportation is a very technical thing you can do with qubits; no actual matter is moved. If you can't adequately describe a qubit you shouldn't even care about this.
The actual paper is beyond my level of physics knowledge, but Oxford uni published an article about it themselves which looks far better to me. No clickbait headline and it explains the significance of the achievement far better
First distributed quantum algorithm brings quantum supercomputers closer
Great article, thank you for sharing
So not FTL right?
Correct. The speed of light is the speed limit of information in the universe.
Entanglement is neat because it allows us to transmit a quantum superposition to two places at once.
It's like an identical pair of Shrodinger's Cats. You can't know if the cat is alive or dead until you open the box, but you do know that the other box will show the same result as yours regardless of where it ends up.
The new thing they've figured out in this article is how to entangle qubits between separate quantum computers, essentially creating a single Shrodingers' Cat that exists in two computers simultaneously which allows them to do the quantum equivalent of parallel processing.
I assume not, but primarily because I would expect the actual scientists and/or Oxford to make a bigger deal out of that if they had achieved it
Look, as someone that's not afraid to be wrong I'm gonna say that I'm skeptical and say that I don't trust this is real until I've read the research papers.
Reading the news nowadays kinda feels like "trust me bro" unless there are several additional systems based on logic that corroborates what is said as truth.
Edit:
I'll need more sleep before attempting to read let alone understand the published paper. No promises in how long it'll take for me to provide my thoughts on it.
Couldn't agree more. At first when I read it, I was like "wow", the my logical brain did a re-read and I was like "doubt".
This isn't a first, quantum teleportation has been a thing since 1997. The breakthrough here is teleporting the information of an entire logical gate. The usecase here enables them to link multiple smaller quantum processors together so they can act as one bigger system.
It's real, but the jargon is unintuitive.
"Teleportation" in the field of quantum mechanics refers to the process by which a quantum state can be copied from one place to another.
This process is like Shrodinger's Cat, both alive and dead until you open the box to check. Quantum information simply does not exist until a measurement collapses it into back into classical information, so copying a quantum state literally involves teleporting the information about it from sender to receiver without allowing the box to be opened during the transition.
Think of it like an identical pair of Shrodinger's Cats. You can't know if the cat is alive or dead 'til you open the box, but because they're identical you know that the other box will show the same result as your own.
The lasers don't transmit information, they transmit a quantum superposition. The act of measuring this quantum state creates information, and because the photons are entangled, this information includes what was received at both ends.
So the photons that carry the information aren't teleported, but the information itself is because it doesn't exist until it is observed.
Can someone explain the significance of quantum teleportation in qbit architectures?
From what little I understand, it relies on quantum entanglement instead of electrical current to 'pass' logic states between qbits in different physical space, but I'm wondering why (in this case) they still need to be connected by fiber optic cables?
I thought the point was that it didn't need to pass signals over physical media, and that was valuable because it was instantaneous and secure, but now it's sounding more like conventional computing...?
From what I understand, the significance is that you can transfer the states around while keeping them in a superposition. Thus you can continue to perform computations with them even after moving them to a physically separate quantum computer.
ah, ok that is interesting, thanks!
One step closer to beating the homophobia that is distance :3
Nah, this technique is more like having a Shrodinger's Cat that's in two places at once. It won't collapse the tyrrany of space, but it will allow us to build bigger and better quantum computers.
Oki :3