Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 42: Poster: Quantum Optics and Photonics III
Q 42.32: Poster
Mittwoch, 2. März 2016, 16:30–19:00, Empore Lichthof
Quantum Key Distribution from a mobile phone — Gwenaelle Mélen1, Tobias Vogl1, Markus Rau1, Silvan Streit1,2, •Peter Freiwang1, Giacomo Corrielli3,4, Andrea Crespi3,4, Roberto Osellame3,4, and Harald Weinfurter1,5 — 1Faculty of Physics, Ludwig-Maximilians-Universität, 80799 München, Germany — 2Department of Electrical and Computer Engineering, Technische Universität München, 80333 München, Germany — 3Istituto di Fotonica e Nanotecnologie, Consiglio Nazionale delle Ricerche (IFN-CNR), 20133 Milano, Italy — 4Dipartimento di Fisica, Politecnico di Milano, 20133 Milano, Italy — 5Max-Planck-Institut für Quantenoptik, 85748 Garching bei München, Germany
We present an integrated optics module enabling Quantum Key Distribution from a small and mobile sender device. The new optics platform (35×20×8 mm) uses a VCSEL array, micro-optical elements and laser written waveguides to generate NIR faint polarised laser pulses with 100 MHz repetition rate. Fully automated beam tracking and live basis-alignment on Bob’s side ensure user-friendly operation with a secret key rate over 100 kHz. Using BB84-like protocols, Alice’s low-cost mobile device can exchange secure key and information everywhere within a trusted node network.