Researchers Have Built The Most Complex Light-Based Quantum Computer Chip Ever

https://www.sciencealert.com/researchers-just-developed-the-most-complex-quantum-computer-chip-so-far-out-of-light

"There's still a lot of work to do to, because although this is the most complex chip of its kind, it's still incredibly simple compared to the chips we currently use. But the researchers point out that the set-up they've created is scalable, which means it's only up from here. Bring on the next era of computing."

There's many different paths to quantum computing - quantum entangling photons(this article), electrons, ions(the easiest/simplest), topological insulators(possibly the most exotic and futuristic), superconducting currents. The ion guys have been claiming that they are the only quantum computing to achieve 99.97 quantum entanglement read-out. I posted an article about this previously.