You push
boundaries.
We remove the
I/O limits.

Cri/oFlex® superconducting cables replace conventional wiring inside cryostats, delivering higher channel density, lower thermal load, and proven reliability at scale. Built in Delft for quantum systems that demand more.

Trusted by quantum leaders

Delft Circuits team members working at a microscope in the cleanroom.

Engineering reliability

In-house design, manufacturing, and testing. Every I/O chain verified before shipment.
Engineer working on qubit control wiring inside a dilution refrigerator.

Join the mission

50+ people. 20+ nationalities. Build the I/O infrastructure that powers
quantum’s next leap.
Cri/oFlex flex cables with gold HD SMP connectors among blue coaxial lines in a cryostat.

Built for scale

256 channels per loader.
Superconducting flex with
integrated components.

// SCALE

Build so you
can scale

The numbers behind scaling quantum I/O — from lab to industry. Designed for today’s quantum systems. Engineered for tomorrow’s.

Channels per loader​

0

Pioneers beyond your I/O

0 +

Higher density compared to HD Coax

0 %

Systems deployed worldwide​

0 +
white and blue lines

// TECHNOLOGY

Advance your
quantum system.
Not your cabling complexity.

Every channel, every system, every test — engineered to remove
the limits between you and your quantum ambition.

Cryogenic I/O wiring with gold flex cables and blue coax lines inside a dilution refrigerator.

// News & resources

Validated at scale

Independent research and industry recognition backing
our approach to quantum I/O infrastructure.

Karen Keenan, COO of Delft Circuits.

Press

Delft Circuits Appoints Karen Keenan as COO to Scale Quantum I/O Hardware Manufacturing for Global Customers

Martin Danoesastro, CEO of Delft Circuits.

Press

Delft Circuits Appoints Martin Danoesastro as CEO & Announces New Financing

Gloved hand holding a gold HD SMP Cri/oFlex flex cable with connector.

Press

Delft Circuits Presents its I/O Roadmap

Built from the ground up

Design, manufacture and validate every system in-house.

// TEAM

Join our fast growing team

From cleanroom to boardroom, every role here powers the quantum industry forward.

Thin Film Engineer

Thin Film Engineer

Product Owner – Manufacturing Systems (ERP, MRP, MES)

Build the manufacturing backbone

RF/Microwave Engineer

RF/ Microwave Engineer