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Publications

Conferences

  1. G. Giannoulis, A. Stathis, A. Ntanos, N. K. Lyras, et. al., “Satellite-to-ground QKD Feasibility Analysis for High Altitude Rural Areas: A Case Study in Greece”, presented in 12th International Workshop on Fiber Optics in Access Networks, Athens Greece, October 29 – 30, 2024 (PDF)
  2. Nikolaos K. Lyras, Konstantinos Katzis, Christiana Panayi, et al. “Feasibility analysis of optical satellite communication systems in Cyprus: CFLOS and irradiance statistics”, Proc. SPIE 13699, International Conference on Space Optics — ICSO 2024, 136996J (28 Jul 2025); https://doi.org/10.1117/12.3075368 (Link)
  3. Giannis Giannoulis, Nikolaos K. Lyras, Argiris Ntanos, et al. “LAIQA: shaping the quantum satellite communications beyond Eagle-1”, Proc. SPIE 13699, International Conference on Space Optics — ICSO 2024, 1369940 (28 Jul 2025); 
    https://doi.org/10.1117/12.3075388 (Link)
  4. A. Stathis, A. Ntanos, N. K. Lyras, G. Giannoulis, A. D. Panagopoulos and H. Avramopoulos, “Converged Satellite to Fiber QKD Links: A Feasibility Analysis”, 2024 14th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP), Rome, Italy, 2024, pp. 500-505, doi: 10.1109/CSNDSP60683.2024.10636494. (Link)
  5. Emmanuel M. Xilouris, Spyros Basilakos, Athanasios Marousis “Helmos optical ground station: current achievements and future perspectives”, Proc. SPIE 13699, International Conference on Space Optics — ICSO 2024, 136993E (28 Jul 2025); https://doi.org/10.1117/12.3075355 (Link)
  6. A. Ntanos, A. Stathis, P. Kourelias, E. Kyriazi, P. Toumasis, N. K. Lyras, N. Makris, S. Tsavdaridis, E. M. Xilouris, A. Marousis, I. Papastamatiou, A. D. Panagopoulos, K. Vyrsokinos, K. Tsiganis, G. T. Kanellos, H. Avramopoulos, and G. Giannoulis, “SMF-Coupled Compact Ground Terminal with Advanced Filtering Towards Daylight C-Band Satellite QKD”, in Proc. 2025 European Conference on Optical Communications (ECOC), 2025, pp. 1–4, doi: 10.1109/ECOC66593.2025.11263298. (Link)
  7. A. Stathis, A. Ntanos, P. Kourelias, M. Xilouris, A. Marousis, A. Panagopoulos, H. Avramopoulos, and G. Giannoulis, “Experimental Evaluation of Background Sky Radiance and Filtering Techniques for Satellite QKD Using Small and Large Aperture Telescopes”, in Proc. 2025 IEEE International Conference on Space Optical Systems and Applications (ICSOS), 2025, pp. 1–8, doi: 10.1109/ICSOS66026.2025.11443186. (Link)
  8. A. Ntanos, A. Stathis, P. Kourelias, A. D. Panagopoulos, H. Avramopoulos, and G. Giannoulis, “Wavelength Trade-offs in Satellite-to-Ground QKD: A System-Level Comparison of 810 nm and 1550 nm Bands”, in Proc. 2025 IEEE International Conference on Space Optical Systems and Applications (ICSOS), 2025, pp. 1–4, doi: 10.1109/ICSOS66026.2025.11443163. (Link)
  9. K. Tsimvrakidis, P. Konteli, A. Ntanos, A. Stathis, N. Makris, P. Kourelias, A. Papageorgopoulos, G. Giannoulis, I. Papastamatiou, P. Papapetropoulos, H. Avramopoulos, G. T. Kanellos, and D. Syvridis, “Bidirectional Fiber-Wireless-Fiber QKD Transmission over 2×8.8 km Field-Deployed Single Feeder Link and 100 m FSO Link”, in Proc. 2025 Optical Fiber Communications Conference and Exhibition (OFC), 2025, pp. 1–3.A. Ntanos, A. Stathis, P. Kourelias, E. Kyriazi, P. Toumasis, N. K. Lyras, H. Avramopoulos, and G. Giannoulis, “Practical Free-Space QKD under Night- and Day-time over a 0.5 km Metropolitan Link,” in Optica Quantum 2.0 Conference and Exhibition, Technical Digest Series (Optica Publishing Group, 2025), paper QW3A.27.
  10. A. Ntanos, A. Stathis, P. Kourelias, E. Kyriazi, P. Toumasis, N. K. Lyras, H. Avramopoulos, and G. Giannoulis, “Practical Free-Space QKD under Night- and Day-time over a 0.5 km Metropolitan Link”, in Optica Quantum 2.0 Conference and Exhibition, Technical Digest Series (Optica Publishing Group, 2025), paper QW3A.27.
  11. N. Makris, P. Kourelias, P. Konteli, E. Kyriazi, A. Papageorgopoulos, P. Toumasis, Z. Georgiadis, A. Ntanos, A. Stathis, K. Tsimvrakidis, H. Avramopoulos, G. Giannoulis, and G. T. Kanellos, “Field-Deployed 800 (2×400) Gbps Bidirectional Fiber-Wireless-Fiber QKD-Encrypted OTNsec Transmission”, in Proc. 2026 International Conference on Quantum Communications, Networking, and Computing (QCNC), 2026, pp. 980–981, doi: 10.1109/QCNC69040.2026.00067. (Link)
  12. E. Kyriazi, P. Toumasis, A. Ntanos, A. Stathis, P. Kourelias, N. Makris, P. Konteli, A. Papageorgopoulos, G. T. Kanellos, D. Apostolopoulos, H. Avramopoulos, and G. Giannoulis, “Field Demonstration of an SDN-enabled 0.48 Tb/s Hybrid Coherent/IM-DD 0.75 km FSO/Fiber System”, in Proc. 2026 Optical Fiber Communications Conference and Exhibition (OFC), 2026, pp. 1–3.

Journals

  1. Stathis, A.; Ntanos, A.; Lyras, N.K.; Giannoulis, G.; Panagopoulos, A.D.; Avramopoulos, H. Toward Converged Satellite/Fiber 1550 nm DS-BB84 QKD Networks: Feasibility Analysis and System Requirements. Photonics 2024, 11, 609. https://doi.org/10.3390/photonics11070609
  2. Kyriazi, E., Toumasis, P., Kourelias, P., Ntanos, A., Stathis, A., Apostolopoulos, D., Lyras, N., Avramopoulos, H., & Giannoulis, G. (2025). Experimental Demonstration of OAF Fiber-FSO Relaying for 60 GBd Transmission in Urban Environment. Photonics, 12(12), 1222. https://doi.org/10.3390/photonics12121222 (Link)
  3. Stathis, A., Ntanos, A., Kourelias, P. et al. Practical approach to last-mile converged free-space and fiber QKD for secure city-scale networks. Sci Rep 16, 4073 (2026). https://doi.org/10.1038/s41598-025-34184-z (Link)
  4. Stathis, Aristeidis, Argiris Ntanos, Panagiotis Kourelias, et al. 2025. Feasibility of C-Band Converged Satellite-Fibre QKD Links Through Telescope-to-SMF Coupling. IET Optoelectronics: e70020. https://doi.org/10.1049/ote2.70020. (Link) 

Leap in Advancing of crItical Quantum key distribution-spAce components

Contact Details:

Project Coordinator:

Hercules Avramopoulos
hav [at] mail.ntua.gr

Dr. Giannis Giannoulis
jgiannou [at] mail.ntua.gr

Dr. Stathis Aristeidis
stathisaris [at] mail.ntua.gr

Argiris Ntanos
ntanosargiris [at] mail.ntua.gr

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Funded by the European Union. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union. Neither the European Union nor the granting authority can be held responsible for them.