Q
Quantinuum
Trapped-ion systems and quantum software; Honeywell-backed category leader.
Trapped IonSeries D+ Pre-IPOIPO H2 2026Cambridge · Founded 2021
89
▲ 0.9
#1 of Trapped Ion
What they do
Quantinuum is the trapped-ion quantum computing company formed by the merger of Honeywell Quantum Solutions and Cambridge Quantum. Its H-series systems are known for record quantum-volume results, high fidelity and mid-circuit measurement, and it pairs hardware with software including the TKET compiler and cybersecurity and AI products.
Majority-owned by Honeywell, Quantinuum is widely viewed as one of the most likely near-term IPO candidates in the sector.
Strengths & weaknesses
Strengths
- +Record quantum-volume and fidelity benchmarks in trapped-ion hardware
- +Full-stack: leading hardware plus TKET software and applications
- +Backing and majority ownership by Honeywell provides stability and capital
Watch-outs
- –Trapped-ion gate speeds trail superconducting approaches
- –Still pre-profit and dependent on continued strategic funding
Key risks
- !IPO timing and valuation subject to market conditions
- !Scaling ion-trap qubit counts remains a hard engineering challenge
Score breakdown
Funding momentum 40%84
€280m Growth, Jan 2024.
Patents 25%95
95th percentile within Trapped Ion.
Talent 20%82
~550 employees.
Research 15%94
94th percentile within Trapped Ion.
Funding history
Growth€280m
Jan 2024 · Led by JPMorgan Chase
Signals
R+0.3
Research: Automated Flag-based Fault-Tolerant State Preparation using Integer Linear Programming
3 days ago · arXiv ↗
R+0.3
Research: Learning to Prepare Molecular Ground States with Transformer Models
3 days ago · arXiv ↗
R+0.3
Research: Improving Dynamical Decoupling for Trapped-Ion QCCD Quantum Computers
11 days ago · arXiv ↗
R+0.3
Research: Dynamical structure factor with a pumping approach on a trapped-ion quantum computer
19 days ago · arXiv ↗
R+0.3
Research: A Quantum-HPC Hybrid Workflow for Reaction-Center Electronic Dynamics: Application to a Cytochrome P450-Inspired Iron-Complex Model
20 days ago · arXiv ↗
Management
Rajeeb Hazra
President & Chief Executive Officer
Major shareholders
Honeywellstrategic54.0%
Strategic & venture investorsvc
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Links & resources
Company website↗TKET documentation↗Sources: Dealroom · EPO · USPTO · arXiv · Company filings — Updated weekly · ▲ 0.9 (30d)