Integrated quantum key distribution sender unit for daily-life implementations

Gwenaelle Mélen; Tobias Vogl; Markus Rau; Giacomo Corrielli; Andrea Crespi; Roberto Osellame; Harald Weinfurter

doi:10.1117/12.2208643

15 March 2016 Integrated quantum key distribution sender unit for daily-life implementations

Gwenaelle Mélen, Tobias Vogl, Markus Rau, Giacomo Corrielli, Andrea Crespi, Roberto Osellame, Harald Weinfurter

Proceedings Volume 9762, Advances in Photonics of Quantum Computing, Memory, and Communication IX; 97620A (2016) https://doi.org/10.1117/12.2208643
Event: SPIE OPTO, 2016, San Francisco, California, United States

Abstract

Unlike currently implemented encryption schemes, Quantum Key Distribution provides a secure way of generating and distributing a key among two parties. Although a multitude of research platforms has been developed, the integration of QKD units within classical communication systems remains a tremendous challenge. The recently achieved maturity of integrated photonic technologies could be exploited to create miniature QKD add-ons that could extend the primary function of various existing systems such as mobile devices or optical stations. In this work we report on an integrated optics module enabling secure short-distance communication for, e.g., quantum access schemes. Using BB84-like protocols, Alice's mobile low-cost device can exchange secure key and information everywhere within a trusted node network. The new optics platform (35×20×8mm) compatible with current smartphone's technology generates NIR faint polarised laser pulses with 100MHz repetition rate. Fully automated beam tracking and live basis-alignment on Bob's side ensure user-friendly operation with a quantum link efficiency as high as 50% stable over a few seconds.

Citation Download Citation

Gwenaelle Mélen, Tobias Vogl, Markus Rau, Giacomo Corrielli, Andrea Crespi, Roberto Osellame, and Harald Weinfurter "Integrated quantum key distribution sender unit for daily-life implementations", Proc. SPIE 9762, Advances in Photonics of Quantum Computing, Memory, and Communication IX, 97620A (15 March 2016); https://doi.org/10.1117/12.2208643

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