Using chaos to characterize a programmable analog quantum simulator
Talkat Near-Term Quantum Computers: Fault Tolerance + Benchmarking + Quantum Advantage + Quantum Algorithms · 2024-04-22..04-26·
summary
A Rydberg atom array runs time‑independent Ising‑like dynamics on up to 60 atoms and yields a measured overlap around 10% fidelity for maximally entangled states; benchmarking uses MPS simulations with a novel resource‑extrapolation over bond dimension to extend validation past classical exact regimes. Shot‑to‑shot laser intensity (quasi‑static) noise explains a power‑law fidelity tail, the POP distributions identify mixtures of coherent and stochastic errors, and the experiment matches an ab‑initio noise model.
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chapters (13)
- 0:00Programmable analog quantum simulator
- 1:06Benchmarking large quantum systems
- 3:53Rydberg atom arrays roles
- 5:59Cross-entropy fidelity benchmarking
- 9:10Classical limits and entanglement growth
- 13:45Resource extrapolation for fidelity
- 17:39Non-Markovian noise and fidelity decay
- 21:49Interpreting 10% fidelity
- 23:36Classical vs quantum advantage
- 27:44Mixed state entanglement metric
- 30:35Noise learning from probability distributions
- 34:47Quantum benchmarking role
- 35:28Q&A and future directions
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