Advanced · 8 resources

Quantum advantage & benchmarking

Experiments claiming a quantum computer did something no classical computer feasibly can — random circuit sampling, boson sampling — and the classical simulation efforts that keep pushing back.

Why it matters

This is where the field’s biggest claims get made and contested. Following the claim-and-refutation cycle teaches you to read results properly.

After this you will be able to

  • Explain random circuit sampling and cross-entropy benchmarking
  • Summarise the supremacy claims and their classical rebuttals
  • Interpret metrics like quantum volume and CLOPS
Start here

3 best places to start

Hand-picked and ordered. If you only have time for one, take the first.

Shtetl-Optimized
Scott Aaronson

The field’s most reliable hype filter. When a quantum computing claim makes the news, this is where a leading complexity theorist explains what it does and does not mean.

IntermediateArticleFreeOngoing
Validating quantum computers using randomized model circuits
Cross, Bishop, Sheldon, Nation & Gambetta (2018)

Defines quantum volume, the single-number benchmark you see in every vendor announcement. Understanding its definition tells you exactly what those announcements do and do not claim.

AdvancedPaperFree2 hours
Also covering this

5 more resources

Google’s curated tutorials, coding labs and research talks, oriented around Cirq and the hardware Google actually builds. Good complement to the IBM-centric mainstream.

IntermediateCourseFree10+ hours

Science journalism that researchers actually respect. The best way to follow real results without either the arXiv firehose or press-release hyperbole.

BeginnerArticleFreeOngoing

The essay that named the NISQ era. Almost no equations, and it frames what near-term hardware can and cannot do more honestly than anything else you will read.

BeginnerPaperFree2 hours
Quantum Computing Report
Quantum Computing Report

Industry news, company tracking, hardware roadmaps and job listings. The best single source for what the commercial side of the field is doing.

IntermediateArticleFreeOngoing

A sober expert assessment of feasibility and timelines, free to read online. Written for policymakers, which means it is unusually clear about uncertainty and risk.

IntermediateBookFree8 hours