"Revolutionary Quantum Computing Achieved with Atom-by-Atom Qubit Platform"
Physicists have successfully performed quantum calculations using individual titanium atoms on a surface by controlling their spin with microwave signals emitted from a scanning tunneling microscope (STM). Although this technique is not expected to compete with leading quantum computing approaches, it could be used to study quantum properties in other chemical elements or molecules. The researchers were able to set up a simple two-qubit quantum operation and read out its results, with the potential to extend the technique to around 100 qubits.