362 citations · 574 across the 14 of their papers we have counts for
14 papers
From Intra-Datacenter Interconnects to Metro Networks: Does CV-QKD Need Loss- or Bandwidth-Conscious Receivers?
Florian Honz, Fabian Laudenbach, Hannes Hübel +2
We experimentally compare a loss-optimized coherent heterodyne and a bandwidth-blessed intradyne CV-QKD architecture. We find the former to prevail performance-wise for medium/long…
Ultra-Low Noise Balanced Receiver with >20 dB Quantum-to-Classical Noise Clearance at 1 GHz
Dinka Milovančev, Florian Honz, Nemanja Vokić +3
We demonstrate a die-level balanced homodyne receiver for coherent optical access and continuous-variable quantum applications, featuring a 40dB CMRR up to 1GHz and a high quantum-…
High Rate CV-QKD Secured Mobile WDM Fronthaul for Dense 5G Radio Networks
Dinka Milovančev, Nemanja Vokić, Fabian Laudenbach +3
A coherent transmission methodology for a continuous-variable quantum key distribution (CV-QKD) system based on quantum-heterodyne measurement through a coherent intradyne receiver…
Modelling Weak-Coherent CV-QKD Systems Using a Classical Simulation Framework
Sören Kreinberg, Igor Koltchanov, Piotr Novik +5
Due to their compatibility to existing telecom technology, continuous variable (CV) weak coherent state protocols are promising candidates for a broad deployment of quantum key dis…
Flexible Entanglement Distribution Overlay for Cloud/Edge DC Interconnect as Seed for IT-Secure Primitives
Fabian Laudenbach, Bernhard Schrenk, Martin Achleitner +3
We leverage spectral assets of entanglement and spatial switching to realize a flexible distribution map for cloud-to-edge and edge-to-edge quantum pipes that seed IT-secure primit…
Spectrally-Shaped Continuous-Variable QKD Operating at 500 MHz Over an Optical Pipe Lit by 11 DWDM Channels
D. Milovančev, N. Vokić, F. Laudenbach +3
We demonstrate high-rate CV-QKD supporting a secure-key rate of 22Mb/s through spectral tailoring and optimal use of quantum receiver bandwidth. Co-existence with 11 adjacent carri…
Design of spontaneous parametric down-conversion in integrated hybrid SixNy-PPLN waveguides
Xiang Cheng, Murat Can Sarihan, Kai-Chi Chang +5
High-efficient and high-purity photon sources are highly desired for quantum information processing. We report the design of a chip-scale hybrid SixNy and thin film periodically-po…
Flexible Cloud/User-Centric Entanglement and Photon Pair Distribution with Synthesizable Optical Router
Fabian Laudenbach, Bernhard Schrenk, Martin Achleitner +3
The practical roll-out of quantum communication technologies in optical networks and the adoption of novel quantum applications demand the distribution of single or entangled photo…
Analysis of the trusted-device scenario in continuous-variable quantum key distribution
Fabian Laudenbach, Christoph Pacher
The assumption that detection and/or state-preparation devices used for continuous-variable quantum key distribution (CV-QKD) are beyond influence of potential eavesdroppers leads…
Thermal effects of the quantum states generated from the isomorphs of PPKTP crystal
Rui-Bo Jin, Guo-Qun Chen, Fabian Laudenbach +2
We theoretically and numerically investigate the temperature-dependent properties of the biphotons generated from four isomorphs of periodically poled (PPKTP):…
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…