Trapped ion qubits
We use individual charged atoms – ions – as our qubits.
Each ion levitates above the surface of a silicon microchip. Because the qubits are naturally identical, well isolated from the environment and easily controllable, ‘trapped ion’ quantum computing is the most mature quantum computing technology.
Trapped ion quantum computing holds world records in almost all the important specifications, such as errors for single / two qubit quantum gates, connectivity and decoherence time.