362 citations · 639 across the 10 of their papers we have counts for
10 papers
Differential Phase-Shift QKD in a 2:16-Split Lit PON with 19 Carrier-Grade Channels
Nemanja Vokiic, Dinka Milovanvcev, Bernhard Schrenk +2
We investigate the practical network integration of differential phase shift quantum key distribution following a cost-optimized deployment scheme where complexity is off-loaded to…
Deployment Opportunities for DPS-QKD in the Co-Existence Regime of Lit GPON / NG-PON2 Access Networks
Nemanja Vokić, Dinka Milovančev, Bernhard Schrenk +2
We demonstrate cost-effective QKD integration for GPON and NG-PON2. Operation at 5.1e-7 secure bits/pulse and a QBER of 3.28% is accomplished for a 13.5-km reach, 2:16-split PON, w…
O-Band Differential Phase-Shift Quantum Key Distribution in 52-Channel C/L-Band Loaded Passive Optical Network
Bernhard Schrenk, Michael Hentschel, Hannes Hübel
A cost-effective QKD transmitter is evaluated in a 16km reach, 2:16-split PON and yields 5.10-7secure bits/pulse. Co-existence with 20 down-and 1 upstream channel is possible at lo…
Pilot-assisted intradyne reception for high-speed continuous-variable quantum key distribution with true local oscillator
Fabian Laudenbach, Bernhard Schrenk, Christoph Pacher +6
We present a pilot-assisted coherent intradyne reception methodology for CV-QKD with true local oscillator. An optically phase-locked reference tone, prepared using carrier-suppres…
Numerical Investigation of Photon-Pair Generation in Periodically Poled MTiOXO4 (M = K, Rb, Cs; X = P, As)
Fabian Laudenbach, Rui-Bo Jin, Chiara Greganti +3
We present a detailed numerical investigation of five nonlinear materials and their properties regarding photon-pair creation using parametric downconversion. Periodic poling of fe…
Continuous-Variable Quantum Key Distribution with Gaussian Modulation -- The Theory of Practical Implementations
Fabian Laudenbach, Christoph Pacher, Chi-Hang Fred Fung +6
Quantum key distribution using weak coherent states and homodyne detection is a promising candidate for practical quantum-cryptographic implementations due to its compatibility wit…
A novel single-crystal & single-pass source for polarisation- and colour-entangled photon pairs
Fabian Laudenbach, Sebastian Kalista, Michael Hentschel +2
We demonstrate a new generation mechanism for polarisation- and colour-entangled photon pairs. In our approach we tailor the phase-matching of a periodically poled KTP crystal such…
A Differential Phase Shift Scheme for Quantum Key Distribution in Passive Optical Networks
Michael Hentschel, Andreas Poppe, Bernhard Schrenk +3
We propose a scheme for quantum key distribution (QKD) in a passive optical network (PON) based on differential phase shift (DPS) coding. A centralized station including all expens…
Three-color Sagnac source of polarization-entangled photon pairs
M. Hentschel, H. Hübel, A. Poppe +1
We demonstrate a compact and stable source of polarization-entangled pairs of photons, one at 810 nm wavelength for high detection efficiency and the other at 1550 nm for long-dist…
Fully automated entanglement-based quantum cryptography system for telecom fiber networks
Alexander Treiber, Andreas Poppe, Michael Hentschel +6
We present a quantum key distribution (QKD) system based on polarisation entanglement for use in telecom fibers. A QKD exchange up to 50km was demonstrated in the laboratory with a…