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). …

So you’ve teleported some qubits, now you must want to know — how?

Welcome back. This is part 3 of my series on quantum teleportation. In the first part, I introduced the foundational theory and notation for quantum computing. In the second part, I showed how to do it in real life (with some minor caveats) on a real quantum computer. Why not check them out if you haven’t already (for the sake of The Algorithm if not your curiosity).

Finally, in this part, I’m going to give you my **very** unqualified thoughts about what sort of crazy universe could ever permit such black magic. I originally sat down to write this article right after publishing the last one, but I quickly realised I had no idea what I was talking about (not that anyone really does). So now I return to you, feeling quite significantly less sane, with a slightly more informed attempt to try and describe what’s going on. …

With the theory done, we can now teleport a real qubit on a real device!

This is the second part of my series on quantum teleportation. The first part covers the basics of quantum computing and ends with a description of the circuit which we will be using in this article. In this part, we will pick up there and learn how to code it using a python package qiskit. Along the way, you’ll also learn a bit about some of the current challenges in quantum computing. …

Ever wish you could send information instantaneously across the universe perfectly securely? Well that's lucky — you’ve come to the right place.

This is part 1 of my 3-part series on quantum teleportation. In this part, you are going to be led through a wild and woolly path from the very the basics of quantum computing up to a description of the truly mind-blowing quantum teleportation protocol. Don’t worry if you can’t understand it completely, not a brain in the world does! Nevertheless, if you feel stuck at any point please feel free to ask questions in the comments.

In the next part, you will learn how to program it yourself using IBM’s quantum computing python package, qiskit. In the third part, you can read about my hugely unqualified musings on how in the world any of this could be possible and what we should think about a world in which it is. …

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