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Christopher Monroe: Gate and Analog Quantum Processing with Trapped Ions (they’re the same thing)

Trapped atomic ion qubits are the most mature of qubit platforms, with essentially infinite idle coherence time and near-perfect SPAM. The entanglement of trapped ion qubits via discrete gates or more global analog operations proceeds from the same physics, and there is hence a continuous transition between these two models of quantum processing. While the central challenge ahead is the engineering of trapped ion system to scale following some well-defined architectural paths, it will be critical to continue co-designing circuits, algorithms, and simulations to the systems as they grow. This is particularly important as the ion trap architecture enjoys the prospect of a reconfigurable and fully-connected qubit graph at scale.