sycramore @sycramore@qoto.org

@humandemocracy Ok, I got a pretty laptop on my hands now.
So the main core about entanglement is that it is dependent on the basis one measures in. Given the so called Bell states, 4 maximally entangled states, you could just switch the measurement basis from the normal computational basis to the Bell state basis. In this basis none of the Bell states would be entangled, but the computational basis is.
Why is this important?
Information "transfer" via entanglement describes quantum protocols where one of the qubits is measured in one basis by Alice and then the other qubit is measured by Bob (or vice versa). If Alice measures first, her outcome is completely random but Bob's outcome is predetermined given that he measures in the same basis as Alice. But the information exchange relies on knowing who chose which basis.
If they communicate the basis choice beforehand they have already exchanged all information about the process. If they communicate their basis choice after the measurements they need to communicate it classically. In that case the communication is only as fast as the communication of the basis choice. This is why you cannot communicate information superlumically fast.

There is another thing though. You can design a strategy to win games with higher probability when all parties share an entangled state over multiple qubits. This is called pseudo telepathy and allows for something "communication like" (the communication to share the information needed to win the game with higher probability). I know that it works mathematically and a reversed version of this winning strategy can be used to verify quantum states so that indirectly one could argue that physically the winning strategy works. Why this is philosophically the case is still beyond me. I once had the discussion with a physics professor and he just said that quantum information in that regard is somehow "more" than classical information. Yet it still amazes me every time I see it.

Here is the paper
https://arxiv.org/pdf/quant-ph/0407221.pdf

and this is the verification protocol for the GHZ state which plays the Mermin parity game in reverse

https://arxiv.org/abs/1112.5064

and the experiment for the verification is here

https://www.nature.com/articles/ncomms13251

The answer is according to my knowledge. There might be other physical explanations which I have no idea of which might be just as valid. I recently came across a paper on Twitter or Mastodon that draws a relationship between black holes and quantum cryptography, so I could imagine that there are also many different physical answers to that question. My answer comes from how I understand entanglement.

@shelldozer @TheNerdyMel @onceitwas @jerrylevine @pluralistic @framework RAM can be a huge problem when it doesn't work for whatever reason. Tried this multiple times with laptops and they didn't boot with the new ram. Apparently some bios versions only accept ram from certain vendors.

@humandemocracy Long story. I will explain when I get access to a decent keyboard

@bitsavers Sounds very delicious. I need to try this.

@bitsavers Pizza?

@shroombab @kattascha Gott, ich hasse diesen ganzen Esomist. Das Beste, was ich entdeckt habe, war ein Gülle-Vitalisierer. Der war echt nice. So ein Müll.

@shroombab Guten Appetit, jetzt hier auch 🙂

Beautiful soundtrack for an amazing saturday <3
https://www.youtube.com/watch?v=WjVEMueXyS8&ab_channel=UrielRodriguez

Watching #StrangerThings and wondering what I might have done in the 80s? Being a bored housewife like Mike's mom with nice 80s hair cut or working as a physicist for Dr. Brenner? My bf (husband in the 80s?) would probably have worked repairing radios and TVs.

@tatzelbrumm Hübsche Karrikatur. Wo hast du die her? Und wer zum Geier ist der Typ auf dem Foto? Du sahest beim letzten Treffen irgendwie anders aus :D

#qotojournal
I am a #Berlin based quantum information scientist with a Masters degree in #physics. My research topic is quantum computing and if you have any questions about it feel free to reach out. In my free time I am interested in demography, climate change, psychopharmacology, biophysics, IT security, computers in general and trying out various shades of lipstick. I toot mostly in German, sometimes in English, depending on the topic and my mood. And yes, I belong to the lazy species of people that comments their code in their native language, in my case German.

@tatzelbrumm jaja, hab dich auch lieb, alterchen ^^