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Cake day: October 7th, 2024

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  • While you describe the way how error correction works, there are other factors you fail to notice.

    It is widely known, that for each physical qubit T2 time decreases when you place it among other. The ultimate question here is: when you add qubits, could you overcome this decoherence with EC or not.

    Say you want to build a QC with 1000 logical qubits and you want to be sure that the error rate doesn’t exceed 0.01% after 1 second. You assemble it, and it turns out that you have 0.1%. You choose to use some simple code, say 7,1 and now you have to assemble a 7000 chip to execute 1000 qubits logic. You again assemble it and the error rate is higher now (due to decoherence and crosstalk). But the question is how much higher? If it’s lower than your EC efficiency then you just drop a few more qubits, use 15,2 code and you are good to go. But what if no?















  • In contrast to what Lemmy or any other internet community is claiming, I do not know economics enough to say what’s happening with the Russian economy for certain.

    But what can I see, is that inflation is not as high as in 2022 or 2014 and Russian authorities have downed the amount of foreign currency a company that sells something for dollars should exchange for roubles. And the war is still going on.

    So… notwithstanding the colossal sanctions, Russia is still standing 🤷🏼‍♂️ but the west has run out of things that they can sanction. Unless you think that potash, ammonia, natural gas, and nuclear fuel would be sanctioned in the near future. In this case, please consult reality. The choice that we’re about to see made is between abandoning Ukraine and military intervention.