HardwarePhotonic
Xanadu Aurora
12physical qubits
Modular photonic architecture demo, path to fault tolerance.
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Quantum scorecard
Xanadu
PhotonicXanadu ships Aurora, 12 physical qubits, announced Jun 2024.
Latest activity on record: Oct 15, 2026
Published figures
Each figure names its device and links to where it was published.
Qubit count over time
5 announced devices, by announcement date. Records such as logical-qubit demonstrations are listed below, not plotted. The line traces the largest device to date.
Every milestone on record
5 entries, newest first.
| Date | Device |
|---|---|
| Jun 2024 | AuroraModular photonic architecture demo, path to fault tolerance.12 physical qubitscuratedSource — Aurora |
| Jun 2022 | Borealis216-mode programmable Gaussian boson sampler.216 physical qubitscuratedSource — Borealis |
| Jan 2020 | X2424 physical qubitsWikipediaSource — X24 |
| Jan 2020 | X1212 physical qubitsWikipediaSource — X12 |
| Jan 2020 | X88 physical qubitsWikipediaSource — X8 |
curated: from the code-reviewed milestone list, sourced to the vendor · reviewed: a news-surfaced milestone an editor published · Wikipedia: synced from Wikipedia's list of quantum processors.
Recent headlines
Not on record for Xanadu yet: two-qubit fidelity, a published roadmap, a live fleet API, metriq-gym benchmarks, funding rounds.
Quantum · Timeline
Xanadu, in order
Everything the site tracks for Xanadu — hardware, records, advantage claims it took part in, funding and its own roadmap — newest first.
Newest on the timeline
Lanes and years
Jump to year
20241 event
20221 event
- HardwarePhotonicLane record
Xanadu Borealis
216physical qubits
216-mode programmable Gaussian boson sampler.
20203 events
- HardwarePhotonic
Xanadu X12
12physical qubits
- HardwarePhotonic
Xanadu X24
24physical qubits
- HardwarePhotonic
Xanadu X8
8physical qubits
That is the whole timeline: 5 events.
Sources
What the units count
- Physical qubits
- The hardware qubits on the device, before any error correction.
- Atoms
- Neutral-atom vendors count the atoms trapped in the array; each one can act as a physical qubit.
- Algorithmic qubits (AQ)
- IonQ's own system-level metric: the widest circuit at which a fixed set of benchmark algorithms still succeeds. No other vendor publishes it.
- Logical qubits
- Error-corrected qubits, each encoded across many physical ones. The codes differ between demonstrations, so two records rarely mean the same thing.
- Quantum volume
- A system-level score (a power of two) from square random circuits. Vendors run it under their own assumptions.
- Two-qubit gate fidelity
- How often a two-qubit gate does what it should, as a percent. The cards show the best published figure, with its device and source.