Quantum algorithms for the calculation of electronic states of molecules on near-term quantum computers are primarily hybrid, involving iterative schemes that alternate quantum and classical processing components. Repeatedly interfacing quantum and classical steps increases the measurement costs and leads to a tradeoff between requirements of viable coherence and a feasible number of circuit repetitions. I shall present new options for electronic structure quantum algorithms based on the use of non-orthogonal methods that allow a different cut between quantum and classical processing components to be made.
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