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  1. What is a quantum computer? - New Scientist

    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.

  2. Quantum computers are finally on the verge of being useful

    Sep 18, 2025 · And it is markedly different to the way quantum computing is often presented, where the emphasis is on experiments that showcase quantum computers outperforming classical computers in …

  3. IBM has unveiled two unprecedentedly complex quantum computers

    Nov 12, 2025 · As a contender in the race to build an error-free quantum supercomputer, IBM has been taking a different tack than its most direct competitors. Now, the firm has unveiled two new quantum …

  4. Quantum computers need classical computing to be truly useful

    Nov 21, 2025 · A vital ingredient for making quantum computers truly useful just might be conventional computers. That was the message from a gathering of researchers this month, which explained that …

  5. At last, we are discovering what quantum computers will be useful for

    Jun 23, 2025 · Over the past decade, quantum computing has grown into a billion-dollar industry. Everyone seems to be investing in it, from tech giants, such as IBM and Google, to the US military. …

  6. IBM says it will build a practical quantum supercomputer by 2029

    Jun 10, 2025 · The company has unveiled new innovations in quantum hardware and software that researchers hope will make quantum computing both error-proof and useful before the end of the …

  7. What makes a quantum computer good? - New Scientist

    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 …

  8. IBM will release the largest ever quantum computer in 2025

    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.

  9. Record-breaking quantum computer has more than 1000 qubits

    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 …

  10. Quantum computers have finally achieved unconditional supremacy

    Sep 19, 2025 · What can quantum computers do that their traditional counterparts absolutely cannot? This is one of the biggest questions facing the fast-growing industry, and now we finally have an …