Quantum Computing
5 articles in this category
Schrödinger's cat was a joke. Now it fixes quantum computers
In 1935, Schrödinger dreamed up a cat to mock quantum mechanics. Today that same cat — as a cat qubit — is the best candidate for fixing the greatest flaw of quantum computers: that they keep making mistakes. Amazon and Yale have just shown that errors can be corrected without a thousand spare qubits.
23 kilograms that change everything
571 thousand bits of quantum key in a six-minute flight, with an error of 0.99%. The payload of Jinan-1 weighs 23 kg, the ground station weighs 100 kg. Four cities, routine work from 2022 to 2023.
A computer that shouldn't work
In November 2023, Andrew King, a forty-something physicist employed at Canadian D-Wave Systems, closed the door of a conference room in Burnaby behind him.
Photon cloning finally works. 30× faster than a year ago
Indistinguishable photons in the 1550 nm telecommunications band, 30 times faster than a year earlier. The result of Paweł Holewa's team in Nature Communications shifts the question from "if" to "when".
One square centimeter versus a supercomputer. Poles in the team that proved quantum superiority
The D-Wave quantum processor performed calculations that the best supercomputers could not repeat in a reasonable time. There are 63 authors in the team - two Poles from the Jagiellonian University. Their work in Science is the first practical proof that a quantum machine can solve a real physics problem beyond the reach of classical computers.