Quantum computers have been “just around the corner” for 3 decades or more. And will never be realised. They are science fiction fantasy based on an imaginary magic pseudoscience called Quantum wave particle duality. Quantum “theorists” seem to publish almost daily their misunderstandings of the classical interference effects of wave only Electromagnetic radiation. Below is a link where once again quantum theorists have misunderstood classical resonance in atoms. Because in truth Atoms are just classical harmonic oscillators and will produce a specific range of harmonics and sub harmonics from just one source fundamental wavelength. https://www.sciencedaily.com/releases/2024/04/240423113051.htm
And from another paper on imaginary 3 photon interference I’ve quoted below some text from another paper on imaginary 3 photon quantum effects. Essentially the researchers have once again misunderstood classical wave only interference effects and harmonic oscillators. And pretended these basic classical effects are spooky quantum magic! https://arxiv.org/pdf/2307.02189
“A high-quality single-photon source based on a semiconductor quantum dot [27] embedded in an open microcavity is used to deterministically produce single photons that are converted to the telecommunication band with a quantum frequency converter [28, 29]. These single photons are deterministically demultiplexed into six indistinguishable singlephoton sources [30, 31], which are manipulated in a fully programmable photonic chip [32]. Heraled by the detection of four output spatial modes with high-efficiency single-photon detectors”
This quote above is an experimental description quoted directly from the opening page of the above linked arxiv paper. And is essentially describing a classical interference effect. Nothing to do with imaginary quantum effects.
There is no need to invoke quantum theory to describe classical wave theory of light. Here below is my classical translation of the above “Quantum” papers quoted text:
“A (low level) light source produces wave emr that is then converted into different wavelengths of emr following centuries old knowledge of resonance and harmonic oscillators. Wavelengths which are then made to interfere with each other in what is called classical wave interference. And the resulting wavelength radiation is then detected at various detectors where wave radiation is absorbed by the detector atoms. Each atom acting sort of like a atom sized capacitor which absorbs discreet amounts of incident wave radiation and releases it in pulses to be amplified and sent to the detector hardware using the “electron” cascade effect. And misconstrued as some sort of magical spooky quantum action at a distance effect.“
The following link is a graphic description of how wave radiation and atom absorption can model imaginary ‘single double or triple photon’ quantum detection as a purely classical effect: https://www.youtube.com/watch?v=8H9kx9_sQYA
And regarding the process cited in these papers as “quantum frequency convertors” and the supposed “surprising” harmonic order observed in SPE’s indicating a energy scale in the Science daily press release cited above. Once again the classical nature of atoms as harmonic oscillators has been ignored in favour of quantum spookiness.
To get the correct explanation using a classical wave only model of atoms and light that does not involve spooky quantum nonsense look to this following paper on Harmonic and sub harmonic wavelengths generated from a single fundamental wavelength in Hydrogen atoms: https://vixra.org/author/p_g_vejde
No need for any quantum magic. Any researchers or institutions wishing to try to harness classical wave interference correctly to try and exploit any possible advances in computing that classical interference could offer to computing had best stop wasting their time and budgets looking for mythical quantum dragons and spooky entangled angels. And hire me to explain how quantum theory has misled research into theoretical physics for more than a century ever since Neil’s Bohr published his misguided Electron shell model in the early 20th C. The fact is that all observed energy levels in all atoms can be modelled succesfully using a wave only classical model. No imaginary electron shells or photons needed.
