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.
Quantum computers turned out to be more useful than expected in 2025
Dec 19, 2025 · Columnist and Technology Quantum computers turned out to be more useful than expected in 2025 Rapid advances in the kind of problems that quantum computers can tackle …
Quantum computers are finally on the verge of being useful
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 …
Quantum computers could usher in a crisis worse than Y2K
6 days ago · Quantum computers could cause a global security crisis that makes the once-feared millennium bug, or Y2K, look quaint. This infamous computer risk was averted through the persistent …
The race to solve the biggest problem in quantum computing
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.
The first quantum computer to break encryption is now shockingly close
Apr 1, 2026 · 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 …
Nobel laureate says he'll build world’s most powerful quantum computer
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 …
Qubit breakthrough could make it easier to build quantum computers
May 29, 2025 · A Canadian quantum computing start-up claims its new qubit will enable much smaller and cheaper error-free quantum computers. But getting there will be a steep challenge. To correct its …
Device with 6100 qubits is a step towards largest quantum computer yet
Sep 24, 2025 · A device with more than 6000 quantum bits, or qubits, has smashed a previously-held record and is the first step towards building the largest quantum computer yet.
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 …