3 ms·
Thanks for posting the link. The GHZ state they created is technically entangled (in the way that Einstein was worried about entanglement, where if you took on
by dcosson 16y ago
Thanks for posting the link. The GHZ state they created is technically entangled (in the way that Einstein was worried about entanglement, where if you took one of the 14 qubits far away from the rest, you could measure it and instantly have knowledge of the other 13 qubits, which seemingly violates special relativity). However, even ignoring the fact that this was only to 50% fidelity, it is also only a superposition of two states. To run, say, the phase estimation algorithm (which is the heavy-lifting part of Shor's algorithm), you need an equal superposition of all 2^14 states, which is obviously a lot different.
Anyway, I agree with your analysis - this is a great accomplishment, but we are still further from having true quantum computers than the news reports would make it seem.