Christian Kurtsiefer Group

We are an experimental group concerned with implementing quantum information building blocks with photons and atoms. We have experience in working with entangled photon pair sources and single photon detection, ranging from fundamental tests in physics to applications like quantum key distribution. Another focus is to make photons and atoms interact strongly in unconventional ways.

More information at our homepage: http://www.qolah.org/

Principal Investigator
Centre for Quantum Technologies
Professor
Department of Physics, Faculty of Science, National University of Singapore
S15-02-04

Christian Kurtsiefer received his PhD in experimental physics in 1997 in the field of atom interferometry from the University of Konstanz, Germany. After a postdoc stint at IBM Almaden research center in San Jose, CA, he became scientific staff member in the Physics Department at the Ludwig-Maximilian University in Munich from 1999 to 2003. He joined the Physics Department of NUS in 2003, and was one of the founding members of CQT in 2007. He is elected fellow of the American Physical Society, and currently president of the Institute of Physics Singapore.

His main research interests are in quantum optics and atomic physics, with an emphasis on experimental quantum information and communication, single photon technologies and atom-light interaction. Recent work is focused on single photon technologies like practical QKD systems, atom-photon interfaces, hybrid quantum systems, and quantum randomness sources.

Group Members

Recent papers

  • J.S.Hwang. (2024). Daytime radiative cooling under extreme weather conditions. Advanced Energy & Sustainability Research
  • X.J.Yeo, Eva Ernst , Alvin Leow, J.S.Hwang, L. Shen, C. Kurtsiefer, P.K. Tan. (2024). Direct measurement of coherent light proportion from a practical laser source. Phys. Rev. A 109 013706
  • P.K. Tan, X.J.Yeo, Alvin Zhen Wei Leow, L. Shen, C. Kurtsiefer. (2023). Practical Range Sensing with Thermal Light. Physical Review Applied 20 014060
  • B.L. Ng, C.H. Chow, C. Kurtsiefer. (2022). Observation of the Mollow Triplet from an optically confined single atom. Phys. Rev. A 106 063719
  • Shen Lijiong, C.H. Chow, Y.X. Peh, X.J.Yeo, P.K. Tan, C. Kurtsiefer. (2022). Distributing Polarization Entangled Photon Pairs with High Rate over Long Distance through Standard Telecommunication Fiber. Physical Review Applied 19 044075
  • J. Lee, Shen Lijiong, A.N. Utama, C. Kurtsiefer. (2022). Absolute clock synchronization with a single time-correlated photon pair source over 10km. Optics Express 30 18530-1853
  • Y. Shi, H.S. Poh, A. Ling, C. Kurtsiefer. (2021). Fibre polarization state compensation in entanglement-based quantum key distribution. Optics Express 29 37075-3708
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