Zobrazeno 1 - 10
of 88
pro vyhledávání: '"Pacher, Christoph"'
Autor:
Hajomer, Adnan A. E., Kanitschar, Florian, Jain, Nitin, Hentschel, Michael, Zhang, Runjia, Lütkenhaus, Norbert, Andersen, Ulrik L., Pacher, Christoph, Gehring, Tobias
Establishing secure data communication necessitates secure key exchange over a public channel. Quantum key distribution (QKD), which leverages the principles of quantum physics, can achieve this with information-theoretic security. The discrete modul
Externí odkaz:
http://arxiv.org/abs/2410.13702
Autor:
Jaksch, Kevin, Dirmeier, Thomas, Weiser, Yannick, Richter, Stefan, Bayraktar, Ömer, Hacker, Bastian, Rösler, Conrad, Khan, Imran, Petscharning, Stefan, Grafenauer, Thomas, Hentschel, Michael, Ömer, Bernhard, Pacher, Christoph, Kanitschar, Florian, Upadhyaya, Twesh, Lin, Jie, Lütkenhaus, Norbert, Leuchs, Gerd, Marquardt, Christoph
Continuous-variable (CV) quantum key distribution (QKD) allows for quantum secure communication with the benefit of being close to existing classical coherent communication. In recent years, CV QKD protocols using a discrete number of displaced coher
Externí odkaz:
http://arxiv.org/abs/2410.12915
Autor:
Kanitschar, Florian, Pacher, Christoph
The conventional point-to-point setting of a Quantum Key Distribution (QKD) protocol typically considers two directly connected remote parties that aim to establish secret keys. This work proposes a natural generalization of a well-established point-
Externí odkaz:
http://arxiv.org/abs/2406.14610
Quantum key distribution (QKD) has been researched for almost four decades and is currently making its way to commercial applications. However, deployment of the technology at scale is challenging, because of the very particular nature of QKD and its
Externí odkaz:
http://arxiv.org/abs/2210.08977
Autor:
Kržič, Andrej, Sharma, Sakshi, Spiess, Christopher, Chandrashekara, Uday, Töpfer, Sebastian, Sauer, Gregor, del Campo, Luis Javier González-Martín, Kopf, Teresa, Petscharnig, Stefan, Grafenauer, Thomas, Lieger, Roland, Ömer, Bernhard, Pacher, Christoph, Berlich, René, Peschel, Thomas, Damm, Christoph, Risse, Stefan, Goy, Matthias, Rieländer, Daniel, Tünnermann, Andreas, Steinlechner, Fabian
Quantum communication has seen rapid progress towards practical large-scale networks, with quantum key distribution (QKD) spearheading this development. While fibre based systems have been shown to be well suited for metropolitan scales, suitable fib
Externí odkaz:
http://arxiv.org/abs/2205.12862
We demonstrate a die-level balanced homodyne detector with a high quantum-to-classical noise clearance of 19.1dB over 3GHz bandwidth. We evaluate this receiver as a high-quality entropy source for random number generation at >10Gb/s and prove the fun
Externí odkaz:
http://arxiv.org/abs/2110.10455
Autor:
Jain, Nitin, Chin, Hou-Man, Mani, Hossein, Lupo, Cosmo, Nikolic, Dino Solar, Kordts, Arne, Pirandola, Stefano, Pedersen, Thomas Brochmann, Kolb, Matthias, Ömer, Bernhard, Pacher, Christoph, Gehring, Tobias, Andersen, Ulrik L.
A quantum key distribution (QKD) system must fulfill the requirement of universal composability to ensure that any cryptographic application (using the QKD system) is also secure. Furthermore, the theoretical proof responsible for security analysis a
Externí odkaz:
http://arxiv.org/abs/2110.09262
Autor:
Kanitschar, Florian, Pacher, Christoph
Publikováno v:
Phys. Rev. Applied 18, 034073 (2022)
We use a recent numerical security proof approach to calculate tight secure key rates in the presence of collective attacks for a continuous-variable (CV) eight-state phase-shift keying (8PSK) protocol with heterodyne detection in the asymptotic limi
Externí odkaz:
http://arxiv.org/abs/2107.06110
Autor:
Vokić, Nemanja, Milovančev, Dinka, Pacher, Christoph, Achleitner, Martin, Huebel, Hannes, Schrenk, Bernhard
We propose a minimally invasive optical overlay for time-interleaved QRNG operation in NG-PON2 transceivers. We experimentally demonstrate that random numbers can be generated at a 0.5 Gb/s rate and validate the randomness through statistical tests.
Externí odkaz:
http://arxiv.org/abs/2106.03930
Autor:
Kanitschar, Florian, Pacher, Christoph
Publikováno v:
Phys. Rev. Applied 18, 034073 (2022)
A numerical security proof technique is used to analyse the security of continuous-variable quantum key distribution (CV-QKD) protocols with phase-shift keying modulation against collective attacks in the asymptotic limit. We argue why it is sufficie
Externí odkaz:
http://arxiv.org/abs/2104.09454