At the end of part 3 of this series, after getting severely tangled in the weeds of trying to understand entanglement (let alone teleportation) I ended with a joke saying I would be back for part 4 to explain how it all REALLY works.

Well, guess what! With even more surprise than you (though probably less scepticism), I am back with a very different presentation of quantum computing that does away with matrices and kets and replaces them with lovely little diagrams. What’s more, teleportation actually makes sense in these diagrams!

Even better news is that you won’t have to hear me rant about time either. (To be fair, I wrote the last one in the middle of COVID lockdown and was beginning to forget the days of the week). Instead, I will be giving a very brief overview of the wonderful textbook “Picturing Quantum Processes” by Aleks Kissinger and Bob Coecke. These guys are part of a group at Oxford doing some very exciting, unconventional work who I call “Bob and the Bad Boys of Quantum” (aka Bob and the BBQs). …


Edwin Agnew

Quantum Computing, Artificial Intelligence & Philosophy Enthusiast. Duke University Junior.

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