I worked at a quantum computing company that builds superconducting QC chips (so, not really applicable to one of the “bombshells” from the article). My team was designing the software stack which allows to control the QC, run quantum jobs/algorithms, and calibrate the parameters.
I’ve made two attempts to explain the work we’ve been doing and to explain the current realistic state of the industry:
1. A talk at PyCon: https://youtu.be/tT1YLP5T71Y
2. A free ebook “ Quantum Computing For Software Engineers” https://leanpub.com/quantum-computing-for-software-engineers
The company I left a few months ago is planning its IPO this year. Like almost all other quantum companies, it’s gonna be a SPAC merger, not a pure IPO. Those traded companies mentioned in the other comments are mostly SPACs as well.
If they're going public I imagine they already sell some kind of QC chips. But, like, who buys them? Yesterday there was a new paper [1] that shows how Shor's algorithm could break realistic encryptions with as little as 10,000 qubits (instead of millions), but as far as I know quantum hardware is still orders of magnitude below even that target. So how big can the market actually be? Shipping to universities or other QC companies for playing around with some actual hardware is nice and all, but in the end someone will be left holding the bag. There is zero profit to be made at the end of the chain.
[1] https://arxiv.org/html/2603.28627v1