D-Wave Systems has designed processors based on a scalable architecture that aim to implement quantum annealing, an algorithm that can be used to solve a wide variety of optimization problems. A minimal requirement for a device to perform quantum annealing is that it maintains coherence throughout an appreciable fraction of the annealing protocol. In reality, any quantum annealer will be subject to noise, which leads to decoherence in some form. Accurate numerical modelling of environmental noise in quantum annealing is therefore of critical importance to the designing of future architectures, and the study of open quantum dynamics in general. To data, efforts to numerically model quantum annealing in D-Wave devices have ignored the effects of charge noise, focusing only on flux noise. We propose developing an approach that is computationally efficient, numerically exact, and that accounts for the effects due to both charge and hybrid noise.
D-Wave Systems Inc.
Physics / Astronomy
Simon Fraser University
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