Stochastic Error Cancellation in Analog Quantum Simulation

Learn about stochastic error cancellation in analog quantum simulation through this conference talk presented at TQC 2024. Explore how random and unbiased local perturbations affect quantum simulators and discover why errors scale with the square root of qubit numbers rather than linearly. Examine the concentration phenomenon of errors and its implications for local observables in the thermodynamic limit. Delve into how stochastic error cancellation influences the fidelity between target and actual states during time-evolution, revealing that systems can tolerate more noise than worst-case bounds suggest when noise sources are statistically independent. Presented by Yiyi Cai, Yu Tong, and John Preskill at the 19th Conference on the Theory of Quantum Computation, Communication and Cryptography, hosted at the Okinawa Institute for Science and Technology.