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Q: Fachverband Quantenoptik und Photonik

Q 31: Poster: Quantum Optics and Photonics I

Q 31.50: Poster

Dienstag, 7. März 2017, 17:00–19:00, P OG1+2

An FPGA based detection system for QKA — •Stefan Schürl, Kai Roth, Oleg Nikiforov, and Thomas Walther — AG Laser und Quantenoptik, Institut für Angewandte Physik, Technische Universität Darmstadt, Schlossgartenstr. 7, 64289 Darmstadt, Germany

Quantum Key Amplification (QKA) offers information-theoretical security for communication superior to the majority of contemporary classical key distribution and amplification schemes. Alice and Bob modules are being designed for the QKA experiment ``Quantum Key Hub`` within the Collaborative Research Center CROSSING at TU Darmstadt.

In order to evaluate timing statistics of photon pair incidents, we present a modified version of the board designed by J.K.Peters [1]: an inexpensive FPGA-based 4 channel system for timing aquisition of TTL signals with an enhanced timing resolution of under 500 ps. This resolution is achieved by creating additional clocks using built in phase-lock loops. The current experimental status is discussed.

[1] J. K. Peters, S. V. Polyakov, A. L. Migdall, and S. W. Nam, ``Simple and inexpensive FPGA-based fast multichannel acquisition board''; https://www.nist.gov/services-resources/software/simple-and-inexpensive-fpga-based-fast-multichannel-acquisition-board (2015).