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ANeedForUsername4 karma

It says that the video is unavailable. Is it just me?

ANeedForUsername3 karma

It's been a while for me, but the ELI5 of it is basically, some people came up with an inequality that will be violated by quantum phenomena. The guys managed to show that their experimental result violated the inequality and since entanglement is a quantum phenomena not observed classically, there's some quantum phenomena being observed.

Also, with respect to your second question, I believe spin has to be taken with respect to an axis. It's usually measured 1 or 0 with respect to an axis, typically the z axis.

I'm nowhere near David's level of Physics so maybe he might be able to explain it better!

ANeedForUsername3 karma

Not sure if this is relevant to your first question but this video shows a simplified setup on producing entangled photons: https://www.youtube.com/watch?v=FB1VWXe-fY4

In reality there is a bit more going on in the experiment but the basic premise is the same.

This link might also help you.

ANeedForUsername1 karma

Thank you for the opportunity to ask you some questions!

In your opinion, which field of quantum looks the most promising to you in the near future?

What do you think happened to Ettore Majorana?

How important is having a good memory in postgraduate programmes?

With all the limitations placed by locality, realism, contextuality, etc, will we be able to find a hidden variable theory? Are there people working to find one?