Diraq — vendor dossier

Diraq

Quantum computers
D

Silicon CMOS spin-qubit quantum computing. UNSW Sydney spin-out built around Andrew Dzurak's decade-plus programme on electron-spin qubits in silicon MOS quantum dots. The thesis is foundry compatibility: Diraq designs the device, partner foundries (imec on 300 mm, GlobalFoundries on CMOS development) fabricate it with industry-standard tools. September 2025 Nature paper with imec reported >99% one- and two-qubit gate fidelity and >99.9% SPAM from randomly-selected 300 mm samples — achieving scalable error-correction-threshold fidelity from a commercial-fab process rather than a bespoke device.

HQ
Sydney, NSW, Australia
Founded
2022
Status
private
Last verified
Sun May 24 2026 08:00:00 GMT+0800 (Singapore Standard Time)

Timeline

2022202320242025202620272028202920302031203220332034today
2022-09
Spun out of UNSW Sydney; Series A US$30M led by Quantonation, Main Sequence, Allectus
2024
Extended Series A — additional US$33M raised
2025-04
Selected for Stage A of DARPA Quantum Benchmarking Initiative
2025-06
Reported integration of cryogenic CMOS control electronics with silicon spin qubits
2025-09
Nature paper with imec — industry-fabricated 300 mm silicon spin qubits exceed 99% one- and two-qubit gate fidelity, >99.9% SPAM
2025-11
Selected for Stage B of DARPA Quantum Benchmarking Initiative (utility-scale by 2033)
2033
Utility-scale silicon-CMOS quantum computer (DARPA QBI target horizon)
shipped milestone public roadmap

Current flagship

imec 300 mm silicon spin-qubit unit cell — foundry-fabricated Si-MOS quantum-dot device, gate fidelities >99%

Milestones

  1. 2025-11
    Selected for Stage B of DARPA Quantum Benchmarking Initiative (utility-scale by 2033)
    Quantum computers press source ↗
  2. 2025-09
    Nature paper with imec — industry-fabricated 300 mm silicon spin qubits exceed 99% one- and two-qubit gate fidelity, >99.9% SPAM
    Quantum computers paper source ↗
  3. 2025-06
    Reported integration of cryogenic CMOS control electronics with silicon spin qubits
    Quantum computers press source ↗
  4. 2025-04
    Selected for Stage A of DARPA Quantum Benchmarking Initiative
    Quantum computers press source ↗
  5. 2024
    Extended Series A — additional US$33M raised
    Quantum computers press source ↗
  6. 2022-09
    Spun out of UNSW Sydney; Series A US$30M led by Quantonation, Main Sequence, Allectus
    Quantum computers press source ↗

Roadmap

  • 2033 Utility-scale silicon-CMOS quantum computer (DARPA QBI target horizon) source ↗

Capability details

Quantum computing

Qubit type
spin-si
Physical qubits
—
Logical qubits
0
1Q gate fidelity
0.999
2Q gate fidelity
0.99
T₁
—
T₂
—
EC code
—
Connectivity
nearest-neighbour
14 unverified fields
  • modalities.qc.physical_qubits_current
  • modalities.qc.coherence_t1_ms
  • modalities.qc.coherence_t2_ms
  • modalities.qc.ec_code
  • modalities.qc.gate_set
  • modalities.qc.connectivity — nearest-neighbour is the typical Si-MOS quantum-dot layout but Diraq has not publicly fixed a connectivity for its target processor
  • shareholders — private-company cap table; investor list confirmed via Wikipedia + press but stake percentages not disclosed
  • key_personnel.1.since — vendor team page does not list start years; 2022 assumed as company founding year
  • key_personnel.2.since
  • key_personnel.3.since
  • key_personnel.4.since
  • key_personnel.5.since
  • key_personnel.6.since
  • key_personnel.7.since

People

  • Andrew Dzurak — CEO & Founder (since 2022) ↗
  • Stefanie Tardo — COO (since 2022) ↗
  • Lasantha Thennakoon — CFO (since 2022) ↗
  • Wee Han Lim — Head of Measurement & Fabrication (since 2022) ↗
  • Chris Escott — Head of Engineering (since 2022) ↗
  • Andre Saraiva — Head of Theory & Product Development (since 2022) ↗
  • Arne Laucht — Head of Technical Partnerships (since 2022) ↗
  • William Jeffrey — Chairman (since 2022) ↗

References