The Quantum Internet

I'm a member of the Royal Institution. You might have watched their Christmas lectures. We actually went to the RI and watched one on organic chemistry when I was in the VIth form at grammar school.

Yesterday I watched a very interesting lecture that was streamed to the internet. The lecturer explained how he built a couple of quantum computers, put them into two towns a few km apart and had them communicating via fibre.

Essentially the same lecture is available on YouTube:

https://youtu.be/IZHWDmm1lAM?si=Qb9d9lnuAwarXV7N

To build his quantum computers he basically finds two adjacent carbon atoms in the centre of the diamond which have nitrogen atoms adjacent to them - a common flaw. Each nitrogen atom is connected to three carbon atoms (carbon is quadrivalent) and the nitrogen (it's trivalent) atoms are connected together. Those eight atoms constitute his quantum computer. It has to be cooled close to absolute zero. It's in the video.

Here is a good explanation of how the diamond-based quantum computer works:

https://physicsworld.com/a/the-diamond-quantum%E2%80%AFrevolution/

I found it challenging and and am watching the YouTube version so that I can get my head round the concepts he mentioned. I can play it as often as I want, of course.

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