Space could emerge from time
Some physicists are questioning the idea of space-timeSAKKMESTERKE/SCIENCE PHOTO LIBRARY Physicists of the 19th century assumed that space was distinct from time – and two researchers now suspect they were…
Quantum eavesdropping could work even from inside a black hole
An observer hiding inside a black hole can eavesdrop on quantum objects outside itvan van/Shutterstock Quantum eavesdropping is possible across a black hole’s event horizon, one of the most impermeable…
Time can move both forwards and backwards at the quantum scale
Does time move backwards in some situations?sakkmesterke/Alamy Some quantum systems may have two arrows of time, one running forwards as usual and another moving backwards. This means that, at some…
AI found a new way to create quantum entanglement
AI found a new way to entangle particles of lightluchschenF/Shutterstock Quantum entanglement just got easier, thanks to artificial intelligence. Researchers discovered a new procedure for creating quantum links between particles,…
Solving Stephen Hawking’s black hole information paradox has raised new mysteries
In March 1974, Stephen Hawking published the paper that made his name. It contained the revelation that black holes – gravitational giants from which nothing, not even light, can escape…
This test could reveal whether gravity is subject to quantum weirdness
How can we test whether gravity is quantum?AndreusK/Getty Images/iStockphoto Though physicists have competing ideas of what quantum gravity could be like, they have yet to definitively determine whether the gravity…
Quantum holograms can send messages that disappear
Polarised light can make messages encoded in a quantum hologram disappearHong Liang, Wai Chun Wong, Tailin An, Jensen Li 2024 A quantum disappearing act could make it possible to embed…
Black holes scramble information – but may not be the best at it
Previously, physicists theorised that black holes are the fastest possible scramblers of informationMARK GARLICK/SCIENCE PHOTO LIBRARY/Alamy When two quantum objects interact, all the information they carry becomes scrambled. Now, physicists…
The nature of reality: Read our top quantum physics features for free
Science Photo Library/Getty ImagesTo invite as many people as possible to discover the thrill of grappling with reality at its most fundamental, we are making seven of our most popular…