I am the Professor of Quantum Information Theory at the University of Oxford, as well as for the Centre for Quantum Technologies at the National University of Singapore. I spend a lot of my time thinking about what quantum mechanics actually means, and how it affects everything and everyone around us.
My latest blog post
Logic is defined so that motion looks simple
I’ve always been intrigued by Einstein’s thoughts on physics and geometry. In one of his essays on this topic he says that reality is defined by geometry plus the laws of physics taken together. Each of them can be tweaked individually, says Einstein, but so long as the other is then appropriately adjusted, the outcome will describe one and the same reality.
Published: May 16, 2022Read in Full
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The “Everything is a Q-Wave” Interpretation of Quantum Physics
When we teach quantum physics we still use some old terminology that can actually be very confusing (and may also lead the uninitiated to believe that certain basic things are still not understood!).
Imaginary time, Twin Paradox and Bell’s Inequalities
The interesting thing about imaginary numbers, like the square root of -1, is that it took two major revolutions in physics to actually make them real.
Are There Any Real Problems With Quantum Gravity?
We present a short, general and accessible introduction to quantizing gravity in the Heisenberg picture. We then apply this formalism…
Classical Evolution Without Evolution
The well known argument of Page and Wootters demonstrates how to “derive” the usual quantum dynamics of a subsystem in…
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