• Lemmylaugh@lemmy.ml
    link
    fedilink
    English
    arrow-up
    9
    arrow-down
    1
    ·
    1 year ago

    Whatever happened to quantum computing that was supposed to replace integrated circuits for cpus?

    • Chobbes@lemmy.world
      link
      fedilink
      English
      arrow-up
      35
      ·
      1 year ago

      That’s not really something that’s on the horizon at all. There’s some experimental quantum computing stuff, but it’s not really practical for anything yet (and certainly not in a personal computer!) It’s also likely not going to be better at the stuff we use normal CPUs for. Eventually they might be useful for certain classes of problems, but probably in more of a coprocessor like capacity (kind of like a side unit like a GPU that’s good at certain tasks). Obviously it’s unknown what the future holds, but I don’t think quantum computing is going to replace silicon any time soon.

      • GigglyBobble@kbin.social
        link
        fedilink
        arrow-up
        16
        ·
        edit-2
        1 year ago

        Quantum computers were never supposed to replace conventional computers. Their theoretical performance is only superior for a specific set of problems that usually are not relevant for every-day computing.

        • Chobbes@lemmy.world
          link
          fedilink
          English
          arrow-up
          1
          ·
          1 year ago

          For sure, though I would not be entirely surprised if the class of problems we care about on a daily basis changes if it ever becomes commercially viable. But currently people mostly care about breaking cryptography which… boo.

      • DokPsy@infosec.pub
        link
        fedilink
        English
        arrow-up
        2
        ·
        1 year ago

        I think it’ll take a new component/circuit design for quantum to be viable for home computing similar to the transformation that happened to computers after the addition of the transistor

        • frezik@midwest.social
          link
          fedilink
          English
          arrow-up
          3
          ·
          1 year ago

          As of yet, quantum computers need exotic cooling. Perhaps there will be some clever way around that, but it may not be solvable. That would keep it forever out of reach of common home or office use.

          • DokPsy@infosec.pub
            link
            fedilink
            English
            arrow-up
            1
            arrow-down
            2
            ·
            1 year ago

            And digital computers needed tube relays and entire buildings to work. With innovation and time, it’ll become more easily handled

            • frezik@midwest.social
              link
              fedilink
              English
              arrow-up
              1
              ·
              1 year ago

              You can’t just assume any one thing will work out. There are plenty of dead ends in technology.

              • DokPsy@infosec.pub
                link
                fedilink
                English
                arrow-up
                1
                ·
                1 year ago

                While true, it doesn’t mean we should stop. At worst, we find techniques that improve other areas of technology

            • TimeSquirrel@kbin.social
              link
              fedilink
              arrow-up
              1
              ·
              edit-2
              1 year ago

              With innovation and time, it’ll become more easily handled

              Not if you’re literally bumping against the laws of physics of the universe. There may be some things that will never come to pass, technologically. FTL travel might be one of them, for example.

              • DokPsy@infosec.pub
                link
                fedilink
                English
                arrow-up
                1
                ·
                1 year ago

                Honestly the laws of physics are constantly in flux and there’s no telling what we could create to circumvent the limits we’re currently pushing.

                As I mentioned in my example: before the innovations with transistors, there was no way to make a portable computer. It was physically impossible

            • bobman@unilem.org
              link
              fedilink
              English
              arrow-up
              1
              arrow-down
              3
              ·
              edit-2
              1 year ago

              I’d love to see us figure out a way to cool quantum computers for the same price it costs to power conventional ones.

              Imagine what such efficiency gains would mean for food preservation in poor nations.

              • DokPsy@infosec.pub
                link
                fedilink
                English
                arrow-up
                1
                ·
                1 year ago

                I’m more expecting innovations to reduce the need for the super cooling but same

        • herrvogel@lemmy.world
          link
          fedilink
          English
          arrow-up
          1
          ·
          1 year ago

          I doubt quantum computing is ever gonna be viable for home computing. The benefits they offer over conventional computing are largely irrelevant to almost anything you might be doing at home, and better materials or manufacturing methods won’t change that.

          • DokPsy@infosec.pub
            link
            fedilink
            English
            arrow-up
            1
            ·
            1 year ago

            Depends on how we approach viability, imo

            Can we currently see a reason for it with its current abilities/functions? No

            But

            We can look right at the history of conventional computing to predict a possible timeline for it. Single purpose computational machines that took a lot of power, a lot of room, and were fairly rare. Used for military or research purposes. Multi purpose machines that could run user created calculations and were slightly smaller and efficient. Begins to be used in more academic settings Multipurpose machines capable of being used to aid general office staff, continue to become more compact and efficient Portability becomes possible for select few with a need And so on until we arrive to now where nearly everything and everyone has a computer

    • Chocrates@lemmy.world
      link
      fedilink
      English
      arrow-up
      25
      ·
      edit-2
      1 year ago

      They are not general purpose computers and currently need super conductors that need cryo coolong

      • Chobbes@lemmy.world
        link
        fedilink
        English
        arrow-up
        1
        ·
        1 year ago

        Technically you can already rent time on a quantum computer from IBM… so it kind of already is!