In a quantum computer, the basic unit of memory is a quantum bit or qubit. Qubits are made using physical systems, such as the spin of an electron or the orientation of a photon.

Sep 19, 2025 · Technology Quantum computers have finally achieved unconditional supremacy For the first time, researchers have mathematically proven that a quantum computer needs less …

Dec 19, 2025 · Rapid advances in the kind of problems that quantum computers can tackle suggest that they are closer than ever to becoming useful tools of scientific discovery

5 days ago · A quantum computer capable of breaking the encryption that secures the internet now seems to be just around the corner. Stunning revelations from two research teams outline how it …

Mar 13, 2026 · Technology The race to solve the biggest problem in quantum computing The errors that quantum computers make are holding the technology back.

Feb 3, 2026 · Technology Nobel laureate says he'll build world’s most powerful quantum computer John Martinis has already revolutionised quantum computing twice. Now, he is working on another radical …

Jan 16, 2026 · The quantum computing industry has seen many scientific achievements this past year, and the field is now worth more than $1 billion – a figure projected to double within the next two years.

Feb 25, 2026 · The amount of quantum computing power needed to crack a common data encryption technique has been reduced tenfold. This makes the encryption method even more vulnerable to …

Aug 22, 2025 · Chris Langer at the quantum computing company Quantinuum, which has previously demonstrated quantum advantage with a different type of quantum computer, says this is a …

Oct 13, 2025 · Claims that one quantum computer is better than another rest on terms like quantum advantage or quantum supremacy, fault-tolerance or qubits with better coherence – what does it all …