Speqtral, RAL space success with quantum comms demonstrator
The Singapore-UK Quantum Collaboration unveiled SpeQtre, launching space-based cybersecurity.
With the help of the UK Science and Technology Facilities Council (STFC) RAL Space, SpaceX's Transporter-15 mission launched and deployed SpeQtral's SpeQtre CubeSat. On November 28, 2025, the entanglement-based quantum communications demonstrator satellite was launched into sun-synchronous orbit, advancing Singapore-UK space collaboration and quantum communications technologies.
SpeQtre: From Idea to Orbit
SpeQtral designed a space-qualified quantum payload for SpeQtre, a 12-unit CubeSat. A miniaturised entangled-photon pair generator and detector modules are its main component. The satellite is about the size of a large microwave oven.
SpeQtral has travelled space before. The first polarization-entangled photon source and detectors were operated in space by SpooQy-1, a 3U CubeSat project.
SpeQtre can create and transfer entangled photons from space to Earth with better hardware and performance, enabling global quantum key distribution (QKD). SpooQy-1 lessons are directly applied here.
Mission Goals: Secure Space Quantum-Key Distribution
SpeQtre uses SpeQtral's cutting-edge quantum technology to study safe space-based quantum communications. The 12U CubeSat is microwave-sized. The SpeQtral source and detector modules for space-qualified entangled photon pairs are included. Communication of quantum information from a spacecraft this large is technically difficult. This complex technology will be simplified to cut costs and boost accessibility for quantum communication projects. SpeQtre will carefully study quantum communication concerns from space, starting with fundamental component verification and advancing to more complicated protocols.
SpeQtral CEO Chune Yang Lum said the mission took years of collaboration. He stressed how a deliberate approach is being utilised to gradually test each technology component, leading to increasingly ambitious quantum communications capabilities. The SpooQy-1 CubeSat mission showed an entangled photon pair source in orbit. SpeQtral participated. Strategic agreements with Hispasat, Thales Alenia Space, and SES are commercialising quantum communications in space.
RAL Space in the UK helped build and prepare the satellite. RAL Space experts devised a critical device to broadcast SpeQtre's quantum signals to Earth. To prepare the spacecraft for space, they assembled its components and used their comprehensive environmental test facilities. Andy Vick, UK Principal Investigator for SpeQtre and Disruptive Technology Lead at RAL Space, said this is the first satellite using their flexible mission infrastructure. He believes the team's rapid and imaginative strategy has prepared the way for future UK protests and more ambitious missions.
The mission begins commissioning immediately after deployment. Over the next two months, the satellite platform will be commissioned, testing and activating every spacecraft subsystem. SpeQtral and RAL Space will then launch their optical systems and quantum payloads. This sequential approach ensures validation before proceeding to quantum experiments and other out-of-band key delivery technologies. The first quantum communications demonstrations are expected in early 2026.
RAL Space's Chilbolton Observatory in Hampshire, UK, and the Centre for Quantum Technologies at the National University of Singapore will use quantum-enabled optical ground stations to undertake these tests. Data will enable commercial quantum communications satellite development and make secure connections between the two locations easier.
Space-based quantum communication addresses essential new cybersecurity challenges. Quantum computing threatens classical encryption. Satellite-based technologies outperform terrestrial fibre networks' distance-limitation. Satellite systems can send quantum-secure communications across large distances without trusted repeater nodes. The SpeQtre mission supports worldwide quantum-secure network activities, including the European Space Agency's INT-UQKD and Q-DESIGN programs.
Partnership Singapore-UK
The collaboration began with a Singapore-UK initiative to strengthen technology cooperation. The Space Technology Development Program of Singapore's national space office, OSTIn, supports it. National Quantum Technologies Program is managed by UK Research and Innovation. This partnership leverages RAL Space's world-class space engineering and SpeQtral's quantum expertise. OSTIn Executive Director Mr. Jonathan Hung said the launch is a turning moment that shows Singapore's leadership in space-based quantum communications and the necessity of strategic international cooperation in creating key technologies.
This initiative could accelerate commercial quantum communications constellation deployment by proving low-cost, small-satellite quantum communications are feasible. For global quantum technology and space-based security collaboration, important precedents are set. SpeQtral, a leader in quantum communications, intends to create and execute global quantum networks to defend global networks from the quantum revolution. RAL Space, the UK's national space laboratory, develops space capabilities by sharing knowledge during space missions.
Financial institutions, governments, and major infrastructure providers worldwide are scrambling to defend communications from quantum threats. To establish quantum-secure communications, demonstration missions like SpeQtre must prove that small, affordable spacecraft can deliver the cryptographic keys needed to secure the “Quantum Era.”
