quantum mechanics

Everyone knows what time is. We can practically feel it ticking away, marching on in the same direction with horrifying regularity. Time has enslaved the Western world and become our most precious commodity. Turn it over to the physicists however, and it begins to morph, twist and even crumble away. So what is time exactly?
This podcast featuring Paul Davies, a theoretical physicist and cosmologist at Arizona State University and Director of BEYOND: Centre for Fundamental Concepts in Science, explores this difficult question and accompanies our What is time article.
Cat

To celebrate the 100th anniversary of quantum mechanics we bring together some of our introductory material on this marvellous theory. Expand your mind and enjoy!

A tensor network

A new language to talk about quantum physics is making calculations a whole lot easier.

Inside the IBM Quantum System One installed in 2023 at the Cleveland Clinic for use in medical research (Image: IBM)

Quantum computing often grabs the headlines. The word "quantum" itself is intriguing enough, but what exactly is quantum computing?

Over the last few decades physicists have been developing a curious idea. Perhaps the world we inhabit is a hologram, lacking a crucial feature of the world as we perceive it: the third dimension.
To mark international cat day, here's a quick look at the most famous cat in the history of science: Schrödinger's cat.
Find out how some species of birds use quantum mechanics to navigate and studying how they do it might actually help us with building quantum computers.
Are you fascinated by the double slit experiment? Then hold on to your hat for Wheeler's delayed choice experiment.
A possible way of resolving the greatest problem of physics.