South Australian company QuantX Labs has successfully launched a critical component of its optical atomic clock technology into orbit, marking a major milestone on the path to the world’s first fully operational optical atomic clock in space.
The mission saw QuantX Labs’ optical frequency comb launched aboard Exotrail’s spacevan™ orbital transfer vehicle as part of the company’s KAIROS mission, hosted on a SpaceX launch.
The optical frequency comb is a key subsystem of QuantX Labs’ TEMPO.Space optical atomic clock and plays a crucial role in delivering ultra‑precise space-based timing systems. The in‑orbit demonstration will validate the performance of the optical frequency comb in the space environment for the first time, and test key elements of QuantX Labs’ satellite interface, including communications, mechanical, thermal and environmental systems.
QuantX Labs Chief Executive Officer Professor Andre Luiten said the successful launch represents a defining milestone for both the company and Australia’s growing leadership in advanced space technologies.
“Successfully demonstrating this technology in orbit represents a major step toward deploying the world’s first optical atomic clock in space,” Professor Luiten said.
“This increased accuracy will support the next generation of positioning, navigation and timing systems, improving navigation resilience, enabling advanced space missions and supporting emerging technologies that rely on ultra-precise time synchronisation.”
QuantX Labs Co-founders Andre Luiten and Martin O’Connor. Photo Credit: Simon Casson
Optical frequency combs are a Nobel Prize‑winning technology that enable extraordinarily precise measurement of time and frequency and are a core component of optical atomic clocks. In operation, the frequency comb acts as a critical bridge, translating optical outputs into usable electronic timing signals, allowing users to harness the exceptional accuracy of optical atomic clocks.
The mission was welcomed by Head of the Australian Space Agency, Enrico Palermo, who highlighted its importance to Australia’s sovereign space capability.
“This optical frequency comb mission takes QuantX Labs a step closer to realising the full suite of capabilities it has been developing – which are designed to enhance the positioning, navigation and timing services Australians depend on,” Mr Palermo said.
The mission forms part of the KAIROS program, supported by the Australian Space Agency’s Moon to Mars initiative, and delivered in collaboration with international partners, including Exotrail. It has been enabled through contributions from SmartSat CRC and the University of Adelaide, with significant support from the Defence Science and Technology Group and the Advanced Strategic Capabilities Accelerator (ASCA). Together, these contributions reflect a coordinated national effort to advance Australia’s sovereign quantum and space technologies.
QuantX Labs engineers are now completing final environmental testing of the full TEMPO.Space optical atomic clock ahead of its planned launch later this year.
