Comment on Oxford scientists achieve teleportation with quantum supercomputer
knightly@pawb.social 2 days ago“Previous demonstrations of quantum teleportation have focused on transferring quantum states between physically separated systems,” said Dougal Main, from the Department of Physics at the University of Oxford, who led the study.
"In our study, we use quantum teleportation to create interactions between these distant systems. By carefully tailoring these interactions, we can perform logical quantum gates – the fundamental operations of quantum computing – between qubits housed in separate quantum computers.
“This breakthrough enables us to effectively ‘wire together’ distinct quantum processors into a single, fully-connected quantum computer.”
To simplify, they’re not just entangling pairs of photons and sending them out to two systems, but entangling entire qubits that exist on separate systems. This teleports the state of a qubit from one system to another without collapsing its superposition, enabling the quantum equivalent of parallel processing.
ReanuKeeves@lemm.ee 2 days ago
Here’s an article directly from university of oxford regarding this
ox.ac.uk/…/2025-02-06-first-distributed-quantum-a…
They explicitly describe the process as using a photonic network interface. I don’t see how this is entanglement rather than optics/lasers
knightly@pawb.social 2 days ago
The optics are just the medium through which the qubits are entangled, the interesting part isn’t the lasers but the interaction between physically-separated qubits.
You could theoretically accomplish the same thing by physically bonking the qubits together so that they interact via nuclear forces instead of the electromagnetic field, like they did with entire molecules at Durham University a few weeks back: www.msn.com/en-us/news/technology/…/ar-AA1xfHI9
ReanuKeeves@lemm.ee 2 days ago
Well you can’t say it’s teleportation without transmitting data but also say they use fiber optics as a medium. This is about as much teleportation as my fiber optic internet connection.
knightly@pawb.social 2 days ago
It is teleportation, but the thing being teleported is information about a quantum state.
The particles that carry this information are in a quantum superposition, like Shrodinger’s Cat. Because of quantum physics, the information they carry doesn’t exist until you open the box and measure it.