For my current fiction project, The Incursion, I have done a lot of research into particle accelerators, topological quantum computing, microscopic black holes, and other topics. It’s fun stuff, with the caveat that my project is science fiction and I’m cheerfully extrapolating well beyond what science says is possible.
One of the fundamental concepts in my project is that the Superconducting Super Collider was actually built instead of being canceled in 1993. This in turn accelerated the discovery of the Higgs Boson by twelve years and led to the spontaneous creation of microscopic black holes, which even at 40 TeV speed could only be possible if there were more dimensions than we know exist — meaning the SSC also proved the practical existence of higher dimensions!
I’m wandering even further ahead of the science here by positing in turn that the ability to create microscopic black holes, on a structured and repeatable basis, led to a new form of quantum computer that used these black holes as a computational medium. A particle would enter the black hole and the Hawking Radiation that was emitted as the black hole collapsed a fraction of a moment later would provide the result of the computation. Essentially, we could now perform calculations across dimensions at incredibly high speed.
Structuring what was effectively a quantum computer made of millions of microscopic black holes that each existed for such a brief time as to be non-existent to conventional physics was beyond any mathematical capability we possessed. A data-carrying particle would need to be passed from black hole to adjacent black hole, passing its state through the black hole to a particle in a higher dimension via quantum entanglement, and then allow itself to be modified by the ensuing Hawking Radiation emerging from the same black hole as it collapsed before being pulled forward by the gravity of the adjacent black hole without actually being consumed, while new black holes at precise coordinates would have to be continually created to replace those already collapsed. This was known as the Daisy Chain.
The solution turned out to to be creating a very simple black hole quantum computer that would self-expand. Starting with a small set of black holes within the accelerator ring, the quantum computer could calculate the next set required to extend the system. With that additional set, its increased capability could then calculate the next set. Iteratively, therefore, the Daisy Chain could build itself into a dense mesh of black holes created over and over in the same locations around the accelerator ring until the computational power was beyond anything previously achieved. A built-in limiter in the algorithm prevented the calculations from creating a Daisy Chain bigger than the ring that contained the system.
At least, that was the idea . . .