Tag Archives: quantum

The experimental setup passes light through lenses, mirrors and a crystal Charles Roques-Carmes, Yannick Salamin Empty space is not actually empty – it is filled with tiny flickers of quantum fields. Boosting those flickers with very weak laser light can turn the apparent nothingness into a building block for a …

IBM’s quantum computers aren’t useful – yet IBM A quantum version of a computer algorithm widely used in finance, engineering and scientific modelling shows promising signs of operating much faster than existing methods. Experts say there are many hurdles to overcome before it overtakes versions running on ordinary computers, but …

Researchers used the Zuchongzhi quantum computer to entangle dozens of qubits simultaneously JLStock/Shutterstock A record-breaking number of quantum bits, or qubits, have been proven to be entangled inside a quantum computer. There have been previous attempts to achieve this with a relatively large number of qubits, but none have been …

Entangled photons could make better detectors for driverless cars user965874/Alamy Driverless cars can use pulses of laser light to sense objects and measure how far away they are, but this can fail when it is very bright out or a lot of light is reflected from nearby vehicles. Swapping out …

DAVID PARKER/SCIENCE PHOTO LIBRARY DAVID PARKER/SCIENCE PHOTO LIBRARY IMAGINE you could see through everyday objects to the stuff they are made of. If you zoomed in on the arm of a chair, say, you would see that it is made of atoms. Zoom in again and you would see that …

An IonQ quantum computer IonQ Quantum computing firm IonQ has sold a device that it claims will be able to outperform any classical supercomputer or other quantum computer in the world – but the machine has yet to be built and experts are sceptical about its performance. So who currently …

A strange quasiparticle could make error-proof quantum computers Yuichiro Chino/Getty Images Microsoft researchers have made a controversial claim that they have seen evidence of an elusive particle that could solve some of the biggest headaches in quantum computing, but some experts are questioning the discovery. Quantum computers process information using …

The Evobits “farm” in Romania mines the Ethereum and Zilliqa cryptocurrencies Akos Stiller/Bloomberg via Getty Images Quantum computers could be used to mine existing cryptocurrencies like bitcoin or future, more energy-efficient ones, slashing their electricity use, according to two new analyses. Cryptocurrencies that rely on a “proof of work” method …

The Eagle quantum processor IBM IBM’s Eagle quantum computer completed a calculation that stumped the conventional supercomputer it was pitted against. Quantum computers have sparked excitement for a few decades, but researchers haven’t built one that universally outperforms all conventional computers. This is partly because all existing quantum computers are …

Qunnect’s entanglement source Karmela Padavic-Callaghan In an office overlooking an old shipyard in Brooklyn, I am learning that I may have walked over some entangled quantum light on my way here. Since the previous evening, researchers at Qunnect have been sending particles of light, or photons, through a 34-kilometre-long loop …