How to answer this Technical interview question about Algorithm Benchmarking for Mid-Level Quantum Algorithm Expert?

What is your approach to benchmarking the performance of a quantum algorithm against classical algorithms?

Quantum Algorithm Expert

Technical

Asked at

Rigetti Computing

Difficulty :

Medium

Explanation

This question evaluates your ability to compare quantum algorithms with classical counterparts to demonstrate quantum advantage. Recruiters are looking for candidates who can define meaningful metrics and conduct fair comparisons. A strong answer will include specific benchmarks, metrics like runtime or accuracy, and examples of comparative analysis. Avoid failing to address the limitations of current quantum systems.

Answer Example

I benchmark quantum algorithms by comparing runtime and solution quality against classical algorithms on the same problem instance. For example, I evaluated a quantum algorithm for portfolio optimization against a classical Monte Carlo simulation, demonstrating a 30% speedup for certain problem sizes. I also account for hardware constraints and scalability when interpreting results to ensure a fair comparison.

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