Plasmonium artificial qubit replicates room-temperature Hall Effect without magnetic field for fault-tolerant quantum computing

https://www.scmp.com/news/china/science/article/3262459/china-breakthrough-could-make-fault-tolerant-quantum-computing-reality

"photons simulate interaction between charged particles previously observed only in electrons... boxing single photons in with Plasmonium array... Jiuzhang 3 prototype quantum computer first to manipulate 255 photons performing computations billions times faster than the world’s fastest supercomputers... Jiuzhang 4 – capable of controlling more than 2,000 photons – is expected to be unveiled this year"