QKD from Space: Towards a service for customers

Dr. Rupert Ursin Co-Founder and President of: QTL Inc. – Quantum Technology Laboratories GmbH, Vienna Austria  An Academic Spin-off

Institute for Quantum Optics and Quantum Information – Vienna of the Austrian Academy of Sciences

[email protected] [email protected] Austrian track record on quantum communication

A. Fedrizzi et al. R. Ursin et al, Physics, vol. 5, T. Scheidl, et al PNAS, I. Capraro, et al PRL, vol. 109, no. Nature Physics 3, 481 - pp. 389–392, 2009. vol. 107, no. 46, pp. 20, p. 200502, Nov. 2012. 486 (2007) 19708–19713, 2010. Real World Quantum Communication History

X.-S. Ma et al. PNAS 110, 1221-1226 (2013). Wheeler’s Delayed Choice X.-S. Ma, et al, Nature, vol. 489, no. 7415, pp. 269–273–269–273, Sep. 2012.

21.02.2017 [email protected] 2 QKD business case - space for telecommunication at ESA

1.) LEO-to-Ground (one link) • 70 M€ over 5 years • Tx=13cm, Rx=25/50cm • €77,- per Mbit  Complex operation Trust needed!

Optimization problem: 2.) GEO-to-Ground (two link) • 180 M€ over 5 years • Orbital height (v, a, …) • Tx=13 cm, Rx=2 m (QE=30/100%) • Populated area • €153,- per Mb • Cloud coverage  Easier operation No trust needed!

D. Elser et al., Publication in preparation 21.02.2017 [email protected] 3 Comparison of mission scenarios

HAP

2/21/2017 [email protected] 4 Quantum subsystem comparison

Security A quantum state can not be cloned. Single Single Photon Protocols Protocols (EUROPE) (China)

"For CV-QKD with coherent states and heterodyne detection, a composable security proof against the most general attacks has recently been provided,47 but the per link current proof techniques do not Coherent Detection allow a positive key rate for realistic block sizes in this case. TRL

E. Diamanti, H.-K. Lo, B. Qi, and Z. Yuan, “Practical challenges in ,” npj Quantum Information, vol. 2, p. 16025 (2016) Valerio Scarani et al., he security of practical quantum key distribution, Phys. Rev. Mod, 81, (2009)

2/21/2017 [email protected] 5 Two ideas for the future… 1. Entangled 2 photon flight model • Optical pump laser • Detector integration • Tx(s) terminal integration • … Ongoing ARTES 5.2 Currently at TRL 7

2. Quantum Cryptography 15 cm From a Cubesat size Quantum Link platform From Ground

Sat bus & Pol. optics Rx Retro Classical com Solar panels Startracker 2/21/2017 [email protected] 6 Dr. Rupert Ursin Co-Founder and President of: QTL Inc. – Quantum Technology Laboratories GmbH, Vienna Austria  An Academic Spin-off

Institute for Quantum Optics and Quantum Information – Vienna of the Austrian Academy of Sciences