Experimental Singapore-UK Smallsat for Quantum Communications Reaches Orbit
SpeQtral (Singapore) and the UK’s RAL Space have successfully launched SpeQtre, a 12U CubeSat carrying an entanglement-based quantum communications payload, aboard SpaceX’s Transporter-15 mission. Now in sun-synchronous orbit, the satellite begins commissioning ahead of quantum experiments planned for early 2026.
SpeQtre carries a space-qualified entangled photon source and optical downlink instrument miniaturised into one of the smallest platforms ever to attempt space-to-ground quantum communications. The mission aims to validate key technologies needed for quantum key distribution (QKD) from LEO, a capability increasingly viewed as essential for secure next-generation non-terrestrial networks (NTN) and 6G architectures.
The satellite will test transmission of quantum states to optical ground stations in Singapore and the UK, enabling long-distance quantum-secure links beyond the limits of terrestrial fibre. Success would demonstrate that QKD can be delivered via compact, low-cost smallsats instead of large GEO spacecraft, lowering barriers to commercial quantum communication constellations.
SpeQtre builds on SpeQtral’s earlier SpooQy-1 mission and forms part of a Singapore-UK partnership under national quantum and space technology programmes. Both organisations see the mission as a foundation for more ambitious quantum-secure satellite systems as global investment in post-quantum cybersecurity accelerates.
Quantum experiments are expected to begin in early 2026.