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CRYOLINK · BY QUBITECH

CryoLink: Modular cryogenic signal chain for quantum, defence and space

Every module ships with cold S-parameters, heat-load data and calibration records measured at 20 mK.

01 · Vision

Make Indian millikelvin measurements indigenous

Build India's first validated cryogenic signal-chain platform — modular hardware that ships with the calibration, heat-load and drift records that make it usable in any cryostat, anywhere.

01

Indigenous mK infrastructure

Cryogenic wiring, filtering, thermometry and calibration — designed and validated in India for global quantum labs.

02

Validation as a product layer

Every module ships with cold S-parameters, heat-load model, calibration records, drift logs and install SOPs.

03

One integrated stack

Harness, RF chain, filters, thermometry and calibration as a single subsystem — retrofit-ready for any cryostat.

02 · Product lineup & roadmap

Three phases. Seven products. Phase 1 is shipping in 24 months.

Funding from QC LEAP 2026 supports Phase 1 product development end-to-end — three flagship modules with cold-validated datasheets and a pilot installation.

PHASE 1 · NOW

Foundation modules

24 months · in development

Core signal-chain primitives required by every cryogenic install.

Cryogenic DC harness
≤ 15 nW / line heat load at MXC
RF coax output
0.5 dB / m insertion loss @ 4 K · NbTi
Thermometry module
20 mK – 300 K · RuO₂ / Cernox / diode
PHASE 2 · NEXT

Drive & conditioning

After Phase 1 launch

Active modules that extend the platform into drive, readout and noise control.

RF coax input (drive)
≤ 10 dB / m @ 10 GHz, 4 K · CuNi outer
AC resistance bridge
100 pA – 100 µA · 4 mux channels
RF filter module
> 60 dB stop-band @ > 1 GHz
PHASE 3 · LATER

Advanced R&D

Gated · feasibility review

Frontier capabilities pursued after Phase 1 & 2 ship and the platform is proven.

mm-wave waveguide
WR-15 / 12 / 10 · 50 – 110 GHz coverage
03 · Industries we serve

Where these products are used

Wherever a working cryostat needs a reliable, validated signal chain — from university quantum labs to defence and space subsystems.

01

Quantum computing & research

Superconducting and spin-qubit testbeds at IITs, IISc, IISERs, TIFR, RRI and other NQM-funded centres — plus partners across the global academic and hyperscaler ecosystem.

02

Defence

Cryogenic subsystems for DRDO programs requiring low-noise signal chains and validated thermal performance.

03

Space R&D

Indigenous cryogenic subsystems for space-grade instrumentation and ground-based characterisation.

04

Quantum-industry partners

Cryogenic components and signal-chain subsystems for Global quantum startups and ecosystem builders like Qbit Force, Amaravati Quantum Valley and others.

04 · The Qubitech advantage

An in-house quantum test bed and a team that ships validated hardware

India lacks accessible cold-test facilities. We don't wait in queues for fridge time - we built our own.

20 mK
Base temperature
SDR
Small dilution refrigerator
In-house
Operated at Vijayawada
24×7
Cold-bench availability

Rapid prototyping

Cold-test new harness, filter and sensor revisions in days — not months — without booking external fridge time.

Cold-validated datasheets

Every module ships with cold S-parameters, heat-load logs and calibration records measured on our own bench.

Reference system for customers

The same testbed doubles as a demonstration cryostat for FQCI / NQM lab partners and pilot customers.

Local customer proximity

Reference labs, on-site debug, India-time support cycles — fast pilots and faster fixes.

Defensible know-how

Configuration libraries, anchor geometry, QA templates and a growing calibration database.

NQM-aligned localisation

Progressive vendor qualification reduces FX and lead-time exposure for Indian quantum infrastructure.