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.

Jun 23, 2025 · Physics At last, we are discovering what quantum computers will be useful for Quantum computers have been hyped as machines that can solve almost any problem.

Dec 30, 2024 · IBM is planning to build the largest quantum computer so far, by linking together smaller machines to create one with a recording-breaking number of quantum bits, or qubits. The firm’s first ...

Oct 24, 2023 · The world’s first quantum computer to exceed 1000 qubits has more than double that of the previous record holder, IBM’s Osprey machine, which has 433 qubits. Though having more …

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 …

Mar 10, 2025 · Researchers have criticised Microsoft's new Majorana 1 quantum computer, saying the company has made claims about the way it works that aren't fully backed up by scientific evidence

Sep 18, 2025 · Technology Quantum computers are finally on the verge of being useful Two experiments with different quantum computers showcase their growing ability to simulate materials …

Dec 26, 2025 · At the Q2B Silicon Valley conference, scientific and business leaders of the quantum computing industry hailed "spectacular" progress being made towards practical devices – but said …

Sep 30, 2024 · Analysis and Technology Useful quantum computers are edging closer with recent milestones Google, Microsoft and others have taken big steps towards error-free devices, hinting that …

Jul 4, 2025 · Technology Quantum-enhanced supercomputers are starting to do chemistry Working in tandem, a quantum computer and a supercomputer modelled the behaviour of several molecules, …