Review of performance metrics of spin qubits in gated semiconducting nanostructures

We collect values of selected performance characteristics of semiconductor spin qubits defined in electrically controlled nanostructures. The characteristics are envisioned to serve as a community source for the values of figures of merit with agreed-on definitions allowing comparison of different qubit platforms. We include characteristics on the qubit coherence, speed, fidelity, and the qubit-size of multi-qubit devices. The review focuses on collecting the values of these characteristics as reported in the literature, rather than on the details of their definitions or significance. The core of the review are thus tables and figures.