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Quantum · Timeline

Quantum progress, in order

Every hardware milestone, record, advantage claim, funding round and roadmap promise the site tracks, on one timeline, newest first. Read a lane down the page to see how it moves; don't read across lanes as a ranking.

Newest on the timeline

All 7Hardware 5Records 1Advantage claims 0Funding 0Roadmap 1
Lanes and years

Jump to year

ShowingVendor: GoogleClear all
Records at a glanceLargest device in 1 lanes, logical-qubit record, funding, research volume

Largest device, per lane

Logical qubits, record

48logical qubits

QuEra 48 logical qubits · Apr 2024 · on the timeline

Funding caught, last 8 quarters

63 rounds · $16.1B in USD figures

What the news corpus caught, not the market. Only rounds with a USD figure are counted.

Research volume

2,294

arXiv quant-ph submissions in September 2026

Sources

Promised next · 1

Roadmap targets whose year has not arrived yet, at the vendor's own date. They move into the timeline when the year passes, as shipped or as past their date.

  1. RoadmapSuperconductingPromised for 2030

    Google · Large-scale fault-tolerant quantum computer

    Google roadmap

20242 events

  1. HardwareSuperconducting

    Google Willow

    105physical qubits

    First below-threshold surface-code error correction: logical error rate falls as code distance grows.

    Google announcement

  2. Logical qubitsSuperconducting

    Google Willow

    1logical qubit

    First below-threshold surface-code error correction: logical error rate falls as code distance grows.

    Google announcement

20231 event

  1. HardwareSuperconducting

    Google Sycamore (upgrade)

    70physical qubits

    Random-circuit-sampling advantage extended vs classical.

    Paper

20191 event

  1. HardwareSuperconducting

    Google Sycamore

    53physical qubits

    Quantum supremacy claim on random circuit sampling.

    Google announcement

20181 event

  1. HardwareSuperconductingLane record

    Google Bristlecone

    72physical qubits

    Wikipedia

20171 event

  1. HardwareSuperconductingLane record

    Google 20-qubit processor

    20physical qubits

    Wikipedia

That is the whole timeline: 6 events.