Halocene by IQM Quantum Computers: status and timeline

Halocene

Halocene is IQM's open and modular quantum computer line designed for quantum error correction research. The first release is a 150-qubit system built on the IQM Crystal QPU.

ProtoStage 2 of 5

150-qubit system launching end of 2026; 1,000+ qubit systems in roadmap.

Updated 13 Nov 2025Checked 10 Oct0 updates this week

Milestones

Next · First Halocene 150-qubit system ships

IQM Halocene product line announcedNov 2025Complete.
First Halocene 150-qubit system shipsTarget Q4 2026Not yet reached.
1,000+ qubit systems enter developmentTarget 2027Not yet reached.
Fault-tolerant quantum computing achievedTarget 2030Not yet reached.

Most important updates

IQM announces Halocene product line for quantum error correction research with 150-qubit first system due end of 202613 Nov 2025

Upcoming

Q4 2026First Halocene 150-qubit system ships (next)
Q4 2026First Halocene system delivered to customer
20271,000+ qubit systems enter development
2030Fault-tolerant quantum computing achieved

Current obstacles

Scaling physical qubit count while maintaining fidelityAs qubit arrays grow, maintaining 99.7% gate fidelity across all connections becomes harder due to cross-talk and decoherence.
Demonstrating practical logical qubitsMoving from proving that five logical qubits can work in principle to systems where logical qubits outperform physical qubits.

Physics limits

Coherence timeSuperconducting qubits decohere in microseconds to milliseconds. Operations must complete within this window before quantum information is lost.
Cross-talk at high densityFitting more qubits closer together increases unwanted interactions between neighboring qubits, reducing gate fidelity.

How it works

3 parts

Superconducting qubits

Transmon-based design

Uses superconducting transmon qubits, the workhorse of many quantum labs worldwide.

Error correction stack

Open, modular QEC architecture

Transparent quantum error correction stack with modular decoder lets researchers experiment with different error correction codes.

Integration

NVIDIA NVQLink support

Supports NVIDIA's quantum-classical computing framework for hybrid algorithms.

Spec sheet

Spec	Halocene
Qubits (first release)	150^R (reported)
Target physical two-qubit gate fidelity	99.7%^R (reported)
Logical qubits supported	Up to 5^R (reported)
Future roadmap	1,000+ qubits^R (reported)

^R reported by the company

Update log

1 update

Thu 13 Nov 2025

Major: IQM announces Halocene product line for quantum error correction research with 150-qubit first system due end of 2026PressHardware

About IQM Quantum Computers

The team behind Halocene

IQM Quantum Computers

Superconducting quantum, error correction, Halocene

IQM Quantum Computers builds superconducting quantum computers for research and commercial use. Based in Espoo, Finland, IQM is Europe's leading superconducting quantum vendor and is developing systems to achieve fault-tolerant quantum computing by 2030.

Spun out from Aalto University and VTT Technical Research Center in 2018, IQM has raised over €600 million.
The company announced the Halocene product line in November 2025, starting with a 150-qubit system due by end of 2026.
Targeting fault-tolerant quantum computing by 2030 with systems exceeding 1,000 qubits.

iqm.tech (opens iqm.tech)Company profile →

Founded: 20188 yrs
Headquarters: Finland
Status: Private
Valuation: $1BprivateSep 2025
Raised: $558M4 rounds
Last round: BlackRock-managed funds · $55MMar 2026
Works in: QuantumSuperconducting
Coverage: 1 program · 3 updateslatest 30 Mar 2026checked 10 Oct
Lead investors: World Fund
Partners: Aalto University (opens aalto.fi)VTT Technical Research Center (opens vttresearch.com)NVIDIA (opens nvidia.com)
People: Jan Goetz (opens foresight.org)CEO and Co-founder

Spec

Halocene

Qubits (first release)

150^R (reported)

Target physical two-qubit gate fidelity

99.7%^R (reported)

Logical qubits supported

Up to 5^R (reported)

Future roadmap

1,000+ qubits^R (reported)