Quantum computing: ‘Fluxonium’ is the longest-lasting superconducting qubit ever TNA

A superconducting qubit, or quantum bit, has broken the record for how long it can retain its quantum properties. Extending this period will make future quantum computers more useful.

The first step in building a quantum computer is deciding how to make its key ingredients, called qubits. A popular choice, championed by research labs and industry players such as IBM and Google, is the transmon superconducting qubit. But like all qubits, these can become inefficient at storing and processing information after a…