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Photon-based chips vs electron-based chips? It's interesting that photons and electrons are closely related: two neutral photons can become an electron-positron
by akomtu 2y ago
Photon-based chips vs electron-based chips? It's interesting that photons and electrons are closely related: two neutral photons can become an electron-positron pair and vice versa.
The paper mentions that their photonic chip is less precise than an electronic one, but this looks like an advantage for AI. In fact, the stubborn precision of electron-based processors that erase the quantum nature of electrons is what I think is preventing the creation of real AI. In other words, if a microprocessor is effectively a deterministic complex mechanism, it won't become AI no matter what, but if the quantum nature is let loose, at least slightly, interesting things will start to happen.
- nh23423fefe 2y agoI don't see why you would say closely related. They are 2 separate fields which interaction sure. But fermion vs boson, matter vs force carrier, etc. That quantum stuff is just woo. QM isn't magic.
- xeonmc 2y agoThe energy level involved for pair production is astronomically far away from the application discussed here, not to mention the intensity required due to the infinitesimally tiny cross section. This is more using matter as an intermediary for interaction at far lower energy levels, along the lines of Kerr or Pockels.
- westurner 2y agoThere are certainly infinitely non-halting automata on deterministic electronic processors. Abstractly, in terms of constructor theory, the non-halting task is independent from a constructor, which is implemented with a computation medium. FWIU from reading a table on wikipedia about physical platforms for QC it would be possible to do quantum computing with just electron voltage but typical component quality. So phase; certain phases. And now parametic single photon emission and detection. "Low-noise balanced homodyne detection with superconducting nanowire single-photon detectors" (2024) https://news.ycombinator.com/item?id=39537236 https://news.ycombinator.com/item?id=39537236 "A physical [photonic] qubit with built-in error correction" (2024) https://news.ycombinator.com/item?id=39243929 https://news.ycombinator.com/item?id=39243929 "Quantum vortices of strongly interacting photons" (2024) https://www.science.org/doi/10.1126/science.adh5315 https://www.science.org/doi/10.1126/science.adh5315 .. https://arxiv.org/abs/2302.05967 https://arxiv.org/abs/2302.05967 .. "Study of photons in QC reveals photon collisions in matter create vortices" https://news.ycombinator.com/item?id=40600736 https://news.ycombinator.com/item?id=40600736 "How do photons mediate both attraction and repulsion?" (2025) [as phonons in matter] https://news.ycombinator.com/item?id=42661511 https://news.ycombinator.com/item?id=42661511 notes re: recent findings with photons ("quanta")