학술논문
Quantum error mitigation in quantum annealing
Document Type
Working Paper
Author
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
Source
Subject
Language
Abstract
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.
Comment: 10 pages, 5 figures
Comment: 10 pages, 5 figures