Qblox

What Qblox does

Qblox BV is a privately held Dutch quantum control electronics company founded in 2019 in Delft, Netherlands, that designs and sells a modular, qubit-agnostic control stack used by academic research groups and industrial quantum computer builders to operate superconducting, spin, and color-center quantum processors. Its core product, the Cluster, integrates hardware modules (QCM/QCM-RF II for control up to 18.5 GHz, QRM/QRM-RF for readout, QRC, QTM, and QSM) around a deterministic Q1 Sequence Processor running proprietary Q1ASM low-level code, synchronized via the SYNQ protocol (sub-nanosecond, picosecond jitter) and linked via the LINQ protocol (sub-microsecond feedback) — together enabling demonstrated performance such as 99.5% two-qubit gate fidelity at IQM on a 20-qubit system and <650 ns cluster-wide feedback for active qubit reset. The complementary Qblox Scheduler provides high-level Python programming with ready-made experimental libraries, and QICK — an open-source FPGA platform — is commercialized in the U.S. under a DOE/Fermilab partnership.

The company monetizes through quote-based, multi-year enterprise hardware sales of Cluster systems and modules, bundled software licenses and support, and professional services delivered via its Excellence Center program (Chalmers, Université de Sherbrooke). It serves a dual market of academic/research institutions and industrial quantum computer builders (IQM, Rigetti, QuantWare, OQC, Qilimanjaro), with co-engineered integrations into NVIDIA NVQLink (October 2025), Hewlett Packard Enterprise HPC/AI infrastructure (June 2026), and Riverlane's Deltaflow QEC stack (March 2026). Headcount has grown from ~95 in mid-2024 to 170+ by late 2025/early 2026, with regional sales offices in Hamburg and London and a North America headquarters plus U.S. manufacturing hub established in 2025–2026 through a partnership with Prodrive Technologies; total disclosed funding is approximately $35.9M, anchored by a $26M Series A in June 2024 led by Quantonation and Invest-NL Deep Tech Fund.

Name

Qblox

Legal name

Qblox BV

Website

https://qblox.com

Company type

Private

Founded year

2019

Operating status

Operating

Headcount range

101–250 employees

Short description

Qblox designs and sells a modular quantum control stack — hardware modules, deterministic Q1 sequencing, and proprietary SYNQ/LINQ protocols — used by academic labs and industrial quantum computer builders to operate superconducting, spin, and color-center qubit systems.

Ownership category

akta.pro rank

Product category

Quantum Control Electronics

NAICS

Semiconductor and Related Device Manufacturing (334413), Other Electronic Component Manufacturing (334419)

SIC

Semiconductors & Related Devices (3674)

akta.pro primary industry

Quantum Control Electronics (AWG/DAC/ADC, Timing & Synchronization) (HDAGABAF)

akta.pro secondary industries

Control Software & Firmware for Quantum Control Stacks (HDAGABAN), Quantum Control Software & Pulse-Level Programming (HDAGACAJ), Microwave/RF Signal Generation, Up/Downconversion & LO Chains (HDAGABAG), Pulse-Level Compilation & Control Stack Integration (HDAGAKAC)

Keywords

• Quantum control electronics
• Qubit control systems
• Quantum error correction
• Superconducting qubit readout
• Quantum control stack

Headquarters

HQ city

Delft

HQ country

Netherlands

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Technology or R&D, Supply Chain, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Quantum Control Hardware: Sale of modular control electronics including QCM, QCM-RF II, QRM, QRM-RF, QRC, QTM, QSM modules and Cluster systems for qubit control and readout in quantum computers.
2. Software Licenses and Support: Software including Qblox Scheduler for quantum pulse programming, firmware updates, and technical support services bundled with hardware or sold separately.
3. Professional Services: Customer success engineering, application science support, and training programs through the Excellence Center partnerships.

Pricing tiers

Go-to-market motion3 records

Distribution channels2 records

Marketing channels6 records

Core offering

Qblox designs and manufactures modular quantum control and readout electronics—centered on its Cluster rack-mounted system and individual modules (QCM, QRM, QRC, QTM, QSM)—that pulse, synchronize, and read out qubits across superconducting, spin, and color-center architectures. The hardware is paired with the proprietary Q1 Sequence Processor, Q1ASM low-level control language, Qblox Scheduler high-level software, and SYNQ/LINQ synchronization and feedback protocols, sold primarily to academic research groups and industrial quantum computer builders.

Product overview

Qblox provides a modular quantum control stack consisting of hardware modules and software designed to control and readout quantum processors. The core Cluster system integrates multiple module types: QCM and QCM-RF II for qubit control (up to 18.5 GHz), QRM and QRM-RF for readout, QRC for combined control/readout, QTM for photon time-tagging, and QSM for source/measurement. The DC Cluster provides ultra-stable bias control for spin qubits. The Q1 Sequence Processor serves as the computational core with proprietary Q1ASM assembly language for low-level control, while the Qblox Scheduler provides high-level Python-based programming. Two proprietary protocols—SYNQ for sub-nanosecond synchronization and LINQ for fast feedback—enable scaling to hundreds of qubits. The QICK (Quantum Instrumentation Control Kit) is an open-source FPGA platform developed with Fermilab/DOE for U.S. quantum research.

Differentiator

Problem solved

Functional benefit

Products and services

• Cluster Open-architecture rack-mounted modular quantum control stack uniting QCM, QRM, QTM, and other modules with proprietary SYNQ sub-nanosecond synchronization and LINQ low-latency feedback. Supports scaling from 1 to 1000+ qubits for superconducting, spin, and trapped-ion quantum systems. Sold to academic research groups and industrial quantum computer builders.
• DC Cluster Ultra-stable DC bias control system for precision voltage management in quantum experiments, particularly optimized for spin qubit applications requiring stable baseband control. Sold to research teams working on semiconductor spin qubit platforms.
• QCM (Qubit Control Module) Real-time baseband qubit control module with high channel density, ultra-low noise, and nanosecond-scale pulse parameter updates. Unifies seamlessly within the Cluster via SYNQ and LINQ protocols for multi-qubit experiments.
• QCM-RF II (Qubit Control Module RF II) High channel density, ultra-low noise RF qubit control module for precise pulse generation up to 18.5 GHz, with high SFDR, strong phase stability, and seamless Cluster SYNQ synchronization and LINQ feedback.
• QRM (Qubit Readout Module) Ultra-low-noise real-time qubit readout module with on-board data processing capabilities. All-to-all Cluster connectivity enables synchronization (SYNQ) and fast feedback (LINQ) across all channels and modules.
• QRM-RF (Qubit Readout Module RF) RF readout module with onboard data processing, integrating inputs/outputs for multiplexed readout, RF-reflectometry, and spectroscopy. Features high SFDR, LINQ feedback, and Cluster SYNQ.
• QRC (Qubit Readout and Control Module) High-density qubit readout and control module providing integrated RF/MW generation with coincidence detection and timetagging in a single module for scalable, modular precise qubit readout and control with high-fidelity gate operation.
• QTM (Qubit Timetag Module) Quantum time tagging module enabling precise time tagging of photon events with exceptional time resolution for NV centers, trapped ions, and other optically driven quantum systems. Used in quantum memory and photonics research.
• QSM (Quantum Source and Measurement Module) Quantum source and measurement module providing integrated control and photon-counting features for color center and quantum communication applications.
• QICK (Quantum Instrumentation Control Kit) Open-source FPGA-based control and readout platform for quantum systems, originally developed at Delft and commercialized through a partnership with Fermilab and the U.S. Department of Energy. Designed for quantum research and workforce development in the United States.
• Qblox Scheduler High-level Python-based software framework featuring automated hardware optimization and ready-made experimental libraries for superconducting, spin, and NV center qubits, allowing users to focus on physics rather than low-level programming. Bundled with hardware and supported by Qblox.

Named customers11 records

Segments3 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration4 records

Feature6 records

Partnerships

13 partnerships are on record, tiered core and minor.

• Hewlett Packard Enterprise (HPE)coreStrategic or Co-development Partner · 24 June 2026Strategic partnership to advance hybrid classical-quantum computing. Qblox control systems serve as core enabler for integrating quantum technologies with HPE's HPC and AI infrastructure. Joint development of integrated testbeds for hybrid algorithm co-design, software interoperability, and system-level performance benchmarking.
• University of SaskatchewancoreStrategic or Co-development Partner · 31 March 2026Partnership to launch Canada's first university-owned full-stack quantum computer. Qblox provides control systems as one of multiple suppliers contributing to the vendor-supported system.
• Prodrive TechnologiescoreTechnology or Integration · 17 March 2026Strategic partnership for domestic manufacturing and fulfillment hub in Canton, Massachusetts. First shipments of 'Made in America' quantum control systems beginning April 1, 2026. Focus on producing the Cluster for superconducting and trapped-ion systems.
• RiverlanecoreTechnology or Integration · 16 March 2026Integration of Riverlane's Deltaflow quantum error correction system with Qblox control hardware for real-time QEC. Enables capacity of 300 physical qubits and 5 logical qubits with sub-microsecond feedback between detection and correction.
• Elevate QuantumcoreStrategic or Co-development Partner · 16 March 2026Q-PAC (Quantum Platform for Advancement of Commercialization) system launch - nation's first commercially deployable Quantum Open Architecture system in Denver. Qblox provides control electronics as part of modular open-architecture quantum system.
• Institut quantique (IQ) Université de SherbrookecoreStrategic or Co-development Partner · 12 March 2026Joined Qblox Excellence Center program to advance scalable quantum computing research. Integration of Qblox modular quantum control stack into Quantum FabLab supporting research across superconducting, spin, and hybrid qubit systems.
• MAHE (Manipal Academy of Higher Education)minorStrategic or Co-development Partner · 5 March 2026Partnership for Quantum-Hub@MAHE in Bengaluru, India. Qblox signed MoA along with QuantrolOx, Bluefors, ConScience, and C-DAC to establish indigenous quantum hardware ecosystem aligned with India's National Quantum Mission.
• Fermilab / U.S. Department of EnergycoreStrategic or Co-development Partner · 19 November 2025DOE partnership to manufacture and distribute the QICK (Quantum Instrumentation Control Kit) in the U.S. Qblox oversees U.S.-based manufacturing, distribution, and supply chain operations for commercialization of quantum technology.
• NVIDIAcoreTechnology or Integration · 28 October 2025Leveraging NVIDIA NVQLink architecture for scalable quantum computing integration of GPU and quantum processors. NVQLink enables tight integration of NVIDIA GPUs with Qblox Q1 pulse processors for high-performance, low-latency requirements for quantum error correction and utility-scale quantum computers.
• Chalmers University of TechnologycoreStrategic or Co-development PartnerExcellence Center partnership; Qblox as go-to quantum control provider for 100-qubit quantum computer for Swedish industry.
• QuantWarecoreTechnology or IntegrationMultiple collaborations including HectoQubit/2 project for Tuna-5 open-architecture quantum computer and Q-PAC system. QuantWare manufactures superconducting quantum processors used with Qblox control electronics.
• Rigetti ComputingcoreTechnology or IntegrationMultiple collaborations including University of Saskatchewan system and open-architecture quantum systems. Rigetti provides quantum processing units.
• TreQminorStrategic or Co-development PartnerCo-organized workshop on open system architecture at IEEE Quantum Week 2025.

Scale indicators7 records

Recent moves8 records

Expansion highlights6 records

Direct peers

• Quantum Machines: Direct competitor offering the OPX quantum control platform and QUA software for qubit control and readout across superconducting, ion trap, and neutral atom systems. Closest analog in product scope, customer base, and go-to-market, and one of the most aggressive rivals in the space.
• Zurich Instruments: Swiss manufacturer of SHF, HDAWG, and PQSC quantum control electronics used widely in academic and industrial quantum labs. Acquired by Rohde & Schwarz in 2024, giving it vastly greater capital and global reach; directly competes with Qblox on AWG and signal generation.
• Tabor Electronics: Specialized AWG and signal generator vendor serving quantum and RF test markets. Competes with Qblox on arbitrary waveform generation, RF upconversion, and the broader qubit-control electronics stack.
• Quantum Machines (Quantum Orchestrator): Listed separately to emphasize Quantum Machines' flagship Quantum Orchestrator platform, which is the most direct functional analog to Qblox's Cluster and the primary head-to-head competitor for industrial-scale deployments.

Others

• Bluefors: Leading dilution refrigerator manufacturer for quantum computing, frequently co-deployed with Qblox control systems in customer labs. Not a direct competitor, but part of the same integrated quantum hardware stack and a frequent co-design partner.
• Riverlane: Quantum error correction software provider that integrates directly with Qblox hardware. Functions as a partner in the stack rather than a competitor, but its roadmap choices materially shape demand for Qblox's real-time control capabilities.

Emerging players

• Quantum Design: Distributor and developer of cryogenic and low-temperature measurement systems, including partnerships with Attocube and other quantum hardware vendors. Tangentially competes at the system-integration layer adjacent to Qblox's Cluster.
• Swabian Instruments: Offers time-tagger and photon-counting products (Time Tagger, Pulse Streamer) used in photonic quantum computing, trapped-ion, and color-center labs. Overlaps with Qblox's QTM timetag module and quantum communication use cases.

Broad incumbents

• Keysight Technologies: Large test-and-measurement incumbent with a quantum control portfolio (M5300A, M9411A, QCS) targeting the same customers as Qblox. Competes as part of a much broader product portfolio rather than a focused quantum play.

Regional players

• Maybell Quantum: U.S.-based cryogenics and dilution refrigerator maker that has joined Qblox-led open-architecture initiatives (e.g., Q-PAC). Acts as a complementary hardware partner rather than a control-electronics competitor.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/qblox
• Xx.com/qbloxquantum

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Subsidiaries1 record

Funding overview

Funding rounds5 records

Investors6 records

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M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Qblox