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Ann: Archer to collaborate with Australian Defence Prime NIOA, page-57

  1. flammo
    747 Posts.
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    21/06/21
    16:44
    Post #: 53971129
    Hi Legman,

    Not sure what the hostility all is about sharing your genuine concern, but yes, the article you've linked is a bit misleading in the title. Xanadu explain it themselves here:

    https://medium.com/xanaduai/on-the-road-to-room-temperature-quantum-computation-d1bd356dcf57

    There is a catch. As we mentioned, presently and in the short term, there is still one cryogenic component used in Xanadu’s quantum computing hardware stack. Those familiar with quantum photonics will recognize that we make heavy use of specialized photon counting detectors in our hardware stack. These photon counters — in our case, transition edge sensor (TES) detectors — read out the quantum states of the entangled beams of light after they have exited the chip, and comprise a very important part of our technology. Unfortunately, they also rely on superconductivity to do their job, and therefore require cryogenic temperatures. So the claim that “photonic quantum computers operate at room temperature” needs qualification: the chip itself sits at room temperature, but some cooling is currently needed for the detectors.

    Whereas Archer are developing quantum computer with everything at room temperature. So Archer's chip could integrate well inside a desktop PC, but Xanadu's system would be one at a university, with people in other room(s) using the one super chilled system via fibre networks.

    One will be much more profitable commercially, than the other.

    AXE Price at posting: 76.0¢ Sentiment: Buy Disclosure: Held
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