Zobrazeno 1 - 10
of 66
pro vyhledávání: '"Knips, Lukas"'
Autor:
Cieśliński, Paweł, Knips, Lukas, Kowalczyk, Mateusz, Laskowski, Wiesław, Paterek, Tomasz, Vértesi, Tamás, Weinfurter, Harald
Publikováno v:
Proc. Natl. Acad. Sci. U.S.A. 121, (44) e2404455121 (2024)
Quantum mechanics imposes limits on the statistics of certain observables. Perhaps the most famous example is the uncertainty principle. Similar trade-offs also exist for the simultaneous violation of multiple Bell inequalities. In the simplest case
Externí odkaz:
http://arxiv.org/abs/2312.04373
Autor:
Baliuka, Adomas, Stöcker, Markus, Auer, Michael, Freiwang, Peter, Weinfurter, Harald, Knips, Lukas
Quantum key distribution (QKD) protocols are proven secure based on fundamental physical laws, however, the proofs consider a well-defined setting and encoding of the sent quantum signals only. Side channels, where the encoded quantum state is correl
Externí odkaz:
http://arxiv.org/abs/2310.13738
Autor:
Cieśliński, Paweł, Imai, Satoya, Dziewior, Jan, Gühne, Otfried, Knips, Lukas, Laskowski, Wiesław, Meinecke, Jasmin, Paterek, Tomasz, Vértesi, Tamás
Publikováno v:
Phys. Rep. 1095, 1 (2024)
Measurements with randomly chosen settings determine many important properties of quantum states without the need for a shared reference frame or calibration. They naturally emerge in the context of quantum communication and quantum computing when de
Externí odkaz:
http://arxiv.org/abs/2307.01251
Autor:
Cieslinski, Pawel, Dziewior, Jan, Knips, Lukas, Klobus, Waldemar, Meinecke, Jasmin, Paterek, Tomasz, Weinfurter, Harald, Laskowski, Wieslaw
Publikováno v:
npj Quantum Inf 10, 14 (2024)
Detecting entanglement in multipartite quantum states is an inherently probabilistic process, typically with a few measured samples. The level of confidence in entanglement detection quantifies the scheme's validity via the probability that the signa
Externí odkaz:
http://arxiv.org/abs/2208.01983
Autor:
Vest, Gwenaelle, Freiwang, Peter, Luhn, Jannik, Vogl, Tobias, Rau, Markus, Knips, Lukas, Rosenfeld, Wenjamin, Weinfurter, Harald
Publikováno v:
Phys. Rev. Applied 18, 024067 (2022)
Quantum key distribution (QKD) is a crucial component for truly secure communication, which enables to analyze leakage of information due to eavesdropper attacks. While impressive progress was made in the field of long-distance implementations, user-
Externí odkaz:
http://arxiv.org/abs/2207.12424
Autor:
Dziewior, Jan, Ruscio, Leonardo, Knips, Lukas, Mayer, Eric, Szameit, Alexander, Meinecke, Jasmin D. A.
Open quantum systems are highly relevant, both for practical applications as well as for fundamental questions about the nature of information and its transfer, encompassing for example decoherence and memory effects. Quantum mechanics introduces add
Externí odkaz:
http://arxiv.org/abs/2103.11994
Autor:
Knips, Lukas
Publikováno v:
Quantum Views 4, 47 (2020)
Quantum entanglement is one of the core features of quantum theory. While it is typically revealed by measurements along carefully chosen directions, here we review different methods based on so-called random or randomized measurements. Although this
Externí odkaz:
http://arxiv.org/abs/2011.10591
Publikováno v:
Phys. Rev. A 103, 032412 (2021)
We propose a method to witness entanglement between two continuous-variable systems in a Gaussian state. Its key ingredient is a local lossy state transfer from the original spatially separated systems onto two spatially separated qubits. The qubits
Externí odkaz:
http://arxiv.org/abs/2008.11733
Autor:
Klobus, Waldemar, Miller, Marek, Pandit, Mahasweta, Ganardi, Ray, Knips, Lukas, Dziewior, Jan, Meinecke, Jasmin, Weinfurter, Harald, Laskowski, Wieslaw, Paterek, Tomasz
Publikováno v:
New J. Phys. 23, 063057 (2021)
We propose an information-theoretic quantifier for the advantage gained from cooperation that captures the degree of dependency between subsystems of a global system. The quantifier is distinct from measures of multipartite correlations despite shari
Externí odkaz:
http://arxiv.org/abs/2003.12489
Autor:
Knips, Lukas, Dziewior, Jan, Kłobus, Waldemar, Laskowski, Wiesław, Paterek, Tomasz, Shadbolt, Peter J., Weinfurter, Harald, Meinecke, Jasmin D. A.
Publikováno v:
npj Quantum Inf. 6, 51 (2020)
Quantum entanglement is usually revealed via a well aligned, carefully chosen set of measurements. Yet, under a number of experimental conditions, for example in communication within multiparty quantum networks, noise along the channels or fluctuatin
Externí odkaz:
http://arxiv.org/abs/1910.10732