Comments by "Lepi Doptera" (@lepidoptera9337) on "Don't fall for quantum hype" video.

  1. The difference is not in a single bit/qbit. It's in how the total number of operations scales with the number of bits/qbits. If n is the number of bits/qbits, then the machine state/number of operations the machine can do goes with O(n) for a classical computer, but O(exp(n)) for a quantum computer.
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  2. You will be happy to know that almost all of this research is funded by private organizations. :-)
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  3. So you are basically just telling us that you don't know the actual definition. OK.
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  4. SHA256 can be broken by a sufficiently fast conventional computer. What's your question?
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  5. Except when you are a physicist and you know exactly what it means. ;-)
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  6. The range of possible internal states that a quantum computer can represent grows exponentially with the size of the machine, while it only grows in a linear fashion in an analog or digital computer. So in theory a quantum computer can compute much more efficiently with the same amount of matter. My intuition tells me that this is not quite so in practice, but there is still an enormous advantage to be gained. In a classical computer only the properly structured switching elements are computing. In a quantum computer basically every atom of even the unstructured parts of the machine can be used for the computation. That it still an enormous gain of at least six orders of magnitude, or so, potentially even more.
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  7. You mean you don't like to hear that 900,000 people have died in the US? That's too bad, then.
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  8. She isn't telling you about real physics. She is merely giving you yet another physics for layman synopsis. That's like armchair coaching the NFL. You still can't but it makes you feel like a million bucks.
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  9. No.
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  10. Sounds like a plan, kid... you are going to do that right after you are trying to get that high school diploma, again? :-)
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  11. What is there to break it? Nothing happens in nature without a cause and there is no cause in the physical vacuum that will break entangles low energy states. That's not so for states of sufficiently high energy. The universe is opaque for that radiation and entanglement doesn't survive, either.
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  12. That's cool, but quantum computing can't grow information exponentially. It will actually always lag behind in information to classical computing.
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  13. How do you know how well she is educated in a field if you don't know the field yourself?
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  14. Quantum simulators are useless. They can't do anything that a practical QC can do and they don't answer the relevant mathematical question, either. They are being programmed by people who are not smart enough to do the real work, either on the hard or the software. :-)
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