Bridging the quantum divides: a chance to repair classic(al) mistakes?

Classical computing, which has transformed the world in unprecedented ways, has not always been deployed in ways that prioritise ethical values such as fairness, justice, and equity. The Western-focused, Silicon-Valley-centric 21st-century-computing model creates digital 'haves' and 'have-nots'. Quantum computers promise to be exponentially more powerful than classical computers for some classically hard problems, potentially transforming application areas such as chemistry, drug discovery, and machine learning. However, if access and control over quantum computing is not shared equitably, then this may serve to amplify existing inequalities and create even deeper divides. Here we consider some of the possible implications for responsible quantum computing, looking ahead to ways in which the rollout of quantum computing could centre ethical principles such as fairness and equity, in order to prevent the mistakes of the 'classical-only' past. The issues raised in this paper will be of interest to those engaged in quantum computing research and to those concerned with the societal implications of this major new technology