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Amin, Mohammad H; King, Andrew D; Raymond, Jack; Harris, Richard; Bernoudy, William; Berkley, Andrew J; Boothby, Kelly; Smirnov, Anatoly; Altomare, Fabio; Babcock, Michael; Baron, Catia; Connor, Jake; Dehn, Martin; Enderud, Colin; Hoskinson, Emile; Huang, Shuiyuan; Johnson, Mark W; Ladizinsky, Eric; Lanting, Trevor; MacDonald, Allison J R; Marsden, Gaelen; Molavi, Reza; Oh, Travis; Poulin-Lamarre, Gabriel; Ramp, Hugh; Rich, Chris; Clavera, Berta Trullas; Tsai, Nicholas; Volkmann, Mark; Whittaker, Jed D; Yao, Jason; Heinsdorf, Niclas; Kaushal, Nitin; Nocera, Alberto; Franz, Marcel
arXiv (Cornell University), 11/2023Paper, Journal Article
Quantum Error Mitigation (QEM) presents a promising near-term approach to reduce error when estimating expectation values in quantum computing. Here, we introduce QEM techniques tailored for quantum annealing, using Zero-Noise Extrapolation (ZNE). We implement ZNE through zero-temperature extrapolation as well as energy-time rescaling. We conduct experimental investigations into the quantum critical dynamics of a transverse-field Ising spin chain, demonstrating the successful mitigation of thermal noise through both of these techniques. Moreover, we show that energy-time rescaling effectively mitigates control errors in the coherent regime where the effect of thermal noise is minimal. Our ZNE results agree with exact calculations of the coherent evolution over a range of annealing times that exceeds the coherent annealing range by almost an order of magnitude.
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