The SpooQy Lab

Our results from the SpooQy-1 satellite are now published on Optica. You may read the paper here.

We also co-wrote a commentary with Artur Ekert for the Straits Times discussing the recent results from SpooQy-1 and Micius. You can read it at the NUS news site: https://nus.edu/3fr91O7

Some stories are available at:
Our comms team has also made a short video about the project. Watch it here.

SpooQy-1 was launched from the International Space Station in June 2019. Learn more about the satellite and its science objective.


We are a multi-disciplinary group at the Centre for Quantum Technologies in Singapore.  We are located on the National University of Singapore campus.  Our work leverages optical technology for building compact, rugged & effective optical entanglement systems used for testing fundamental physics and demonstrating quantum-assisted applications. We work with a wide range of optical tools, and have an active interest in nonlinear optics including bulk and waveguide materials. Systems integration (optics, electronics & mechanical design) is a key theme of our work and undergraduate students are encouraged to take part in our projects.  
Latest News from SpooQy Lab

  • Alexander Ling is an invited speaker at Quantum Innovation 2021
  • Alexander Ling is an invited speaker on the topic of realistic rates of QKD from a nanosatellite at the Israel Cyberweek on July 22, 2021. 
  • Israel Cyber Week:  https://cw2021.b2b-wizard.com/expo/home
  • A study on the realistic rates of QKD from a nanosatellite has been Photonics West.
  • A possible design for the optical front end of a QKD nanosatellite has been presented with our colleagues from MIT, U. Arizona and SpeQtral. See         the publication.
  • A design for an atomic-reference fitted to a CubeSat has been published with Markus Krutzik's team at Humboldt University Berlin.
  • review of entangled photon sources based on bulk nonlinear optics. It is featured as a cover for the Review of Scientific Instruments. Co-written with Thomas Jennewein and Fabian Steinlechner.
  • Stable polarization-based QKD over deployed fiber is reported in our latest work on Applied Physics Letters. Joint work with the NUS-Singtel Corp Lab and the team of Christian Kurtsiefer.
  • Our latest design for entangled photon-pairs is now available at Physical Review A. This source converts correlation in position and momentum into polarization entanglement. The nice thing about it is that it uses a minimal part count!