In November 2026, G-Link received a “Best Collaborative Innovation Partner” certificate for its work on the Brazil quantum computing center known as CIQUANTA — the first facility in Latin America built to run a superconducting quantum computer deployed and operated on its own soil.
The certificate was issued jointly by the Yangtze River Delta Quantum Technology Innovation Center and CETC Guojii Quantum Industry (Suzhou) Co., Ltd., the two organizations leading the project from the Chinese side.
What the Brazil Quantum Computing Center Is
CIQUANTA — the Brazil International Quantum Computing Center — is located in the state of Paraíba, in northeastern Brazil. It is classified as a Brazilian national strategic science and technology infrastructure, and once operational it will be the first quantum computing system in Latin America able to run as a production system rather than a laboratory experiment.
The project is a joint China–Brazil undertaking, and is treated by both sides as a milestone in quantum information cooperation between China and Latin America. For Brazil, the value is not only the machine itself but the local capability to operate and maintain it independently.
G-Link’s Role in the Project
G-Link participated as a supporting partner responsible for the superconducting cryogenic cabling scope. That work sat between the quantum hardware and the rest of the system, and it had to meet the project’s technical specifications and delivery schedule without compromise.
The assignment covered three areas: technical development, quality assurance, and delivery coordination. Working alongside the project team, G-Link completed all assigned supporting tasks and contributed to the system’s acceptance and handover.
The certificate recognizes that contribution.
Why Cryogenic Cabling Is One of the Hardest Parts of a Quantum Computer
Most people picture a quantum computer as a chip. In practice, a superconducting quantum processor spends its life inside a dilution refrigerator at temperatures a few thousandths of a degree above absolute zero, and the wiring is often what limits the machine.
The reason is heat. Every conductor that runs from room temperature down to the mixing chamber works as a thermal bridge. The engineering budget for that heat leak is measured in nanowatts per channel, and it competes directly with the cooling power available at the coldest stage.
Cabling inside a cryostat therefore has to satisfy several requirements at the same time:
- Low thermal conductivity — so the wiring does not warm the stage it connects to.
- Hermetic sealing — so the vacuum space stays a vacuum over years of service.
- Stable electrical performance at cryogenic temperature — impedance and loss that do not drift when the system cools down or warms up.
- Mechanical flexibility — so repeated thermal cycling does not fatigue joints or crack insulation.
- Full traceability — material batches, process records and test data that can be audited after the fact.
That last point is where many suppliers fall short. A cryogenic cable that fails usually does not fail loudly; it produces a slow drift in the noise floor or an intermittent thermal oscillation, and by the time anyone notices, the assembly is buried inside a closed system. Which is why projects at this level qualify suppliers on documentation and process discipline as much as on the product itself.
What This Means for Our Fiber Optic Test Customers
G-Link’s main business is optical communication test equipment — OTDRs, optical cable identifiers, fiber monitoring systems. So why does a quantum project matter to a network operator buying an OTDR?
Because the qualification bar is the same bar. A supplier that can hold material traceability, process records and test documentation on a national research infrastructure project is a supplier that can hold them on a fifty-unit OTDR order. The instruments are different; the quality system behind them is not.
Concretely, the same system covers:
- ISO 9001, ISO 14001 and OHSAS 18001 certification across design, production and service.
- CE marking and FCC test reports for the export product lines.
- Per-unit test data shipped with OTDR and monitoring units, so a fault three years later can be traced back to the production record.
You can review the certificates and compliance documentation in full on our quality and certification page, or read more about our manufacturing base and engineering background.
What Comes Next
CIQUANTA is a first step rather than an endpoint. Brazil intends to build a domestic quantum workforce around the facility, and further cooperation between Chinese and Latin American research institutions is already being discussed.
For the Brazil quantum computing center itself, the next milestone is routine operation: keeping a superconducting system cold, calibrated and available month after month. That is a different kind of engineering from building it, and it is where most infrastructure projects either deliver on their promise or quietly stall.
For G-Link, the direction is the same as it has been for fifty years: keep taking on the projects where the tolerances are tight and the documentation requirements are strict, because that is where a manufacturer actually improves.
If you are evaluating a supplier for optical test equipment or a custom optical assembly program, talk to our engineering team — we will send the technical documentation and the qualification records, not just a brochure.
About G-Link — Guilin G-Link Technology Co., Ltd. designs and manufactures optical communication test instruments in Guilin, China. Product lines include handheld and PON OTDRs, optical cable identifiers, embedded OTDR modules, and fiber optic cable monitoring systems. More at glinkotdr.com.
