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
How Much of Mathematics is Really Just Physics?
I’d like to dedicate this short piece to my late friend Prof. Peter T. Landsberg, who was a “thermodynamicist” (this is how he liked to call himself). I used to meet him at the Athenaeum, in the good old days when smoking cigars was still allowed indoors.
Published: October 18, 2021Read in Full
The World Exists Only When No One is Looking
One particular misconception that is ever-present is captured by the statement that quantum physics suggests that “the moon is not there when nobody looks”. This is a riff on the old musings of Bishop Berkeley who asked whether a tree falling in the forest makes a sound if there is no one there to hear it.
A Nightmare of an Eminent Person: A Supporter of the Copenhagen Interpretation Goes to Hell
This is a story about a dear friend of mine, Professor Gustav Klimtovich, who is a world-leading researcher in theoretical quantum physics. Gustav has nightmares and he told me about his recent one involving Hell and the Devil…
A Classical (Local) Account of The Aharonov-Bohm Effect
It is frequently stated that the electromagnetic vector potential acquires a fundamental role in quantum physics, whereas classically it only…
Quantum Signatures of Gravity from Superpositions of Primordial Massive Particles
We study the superposition of primordial massive particles and compute the associated decoherence time scale in the radiation dominated universe….
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