Quantum error mitigation in quantum annealing

Understand

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.