Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Bulla, Lukas"'
Publikováno v:
Phys. Rev. Applied 22, 024059 (2024)
High-quality, distributed quantum entanglement is the distinctive resource for quantum communication and forms the foundation for the unequalled level of security that can be assured in quantum key distribution. While the entanglement provider does n
Externí odkaz:
http://arxiv.org/abs/2402.05690
Autor:
Bittermann, Julius, Bulla, Lukas, Ecker, Sebastian, Neumann, Sebastian Philipp, Fink, Matthias, Bohmann, Martin, Friis, Nicolai, Huber, Marcus, Ursin, Rupert
Publikováno v:
Quantum 8, 1256 (2024)
Quantum technologies have matured to the point that we can test fundamental quantum phenomena under extreme conditions. Specifically, entanglement, a cornerstone of modern quantum information theory, can be robustly produced and verified in various a
Externí odkaz:
http://arxiv.org/abs/2303.13183
Autor:
Bulla, Lukas, Hjorth, Kristian, Kohout, Oskar, Lang, Jan, Ecker, Sebastian, Neumann, Sebastian P., Bittermann, Julius, Kindler, Robert, Huber, Marcus, Bohmann, Martin, Ursin, Rupert, Pivoluska, Matej
In a recent quantum key distribution experiment, high-dimensional protocols were used to show an improved noise resistance over a 10.2 km free-space channel. One of the unresolved questions in this context is whether the communicating parties actuall
Externí odkaz:
http://arxiv.org/abs/2301.05724
Autor:
Achatz, Lukas, Bulla, Lukas, Ortega, Evelyn A., Bartokos, Michael, Ecker, Sebastian, Bohmann, Martin, Ursin, Rupert, Huber, Marcus
Publikováno v:
npj Quantum Information 9, 45 (2023)
Entanglement distribution is at the heart of most quantum communication protocols. Inevitable loss of photons along quantum channels is a major obstacle for distributing entangled photons over long distances, as the no-cloning theorem forbids the inf
Externí odkaz:
http://arxiv.org/abs/2208.10777
Autor:
Bulla, Lukas, Pivoluska, Matej, Hjorth, Kristian, Kohout, Oskar, Lang, Jan, Ecker, Sebastian, Neumann, Sebastian Philipp, Bittermann, Julius, Kindler, Robert, Huber, Marcus, Bohmann, Martin, Ursin, Rupert
Publikováno v:
Phys. Rev. X 13, 021001 (2023)
Entanglement distribution via photons over long distances enables many applications, including quantum key distribution (QKD), which provides unprecedented privacy. The inevitable degradation of entanglement through noise accumulated over long distan
Externí odkaz:
http://arxiv.org/abs/2204.07536
Publikováno v:
Nature Communications 13, 6134 (2022)
Entanglement is the basis of many quantum applications. The technically most mature of them, quantum key distribution, harnesses quantum correlations of entangled photons to produce cryptographic keys of provably unbreakable security. A key challenge
Externí odkaz:
http://arxiv.org/abs/2203.12417
Publikováno v:
Phys. Rev. Applied 17, 034009 (2022)
The faithful distribution of entanglement over noisy channels is a vital prerequisite for many quantum technological applications. Quantum information can be encoded in different degrees of freedom (DOF) of photons, where each encoding comes with its
Externí odkaz:
http://arxiv.org/abs/2110.04159
Publikováno v:
Phys. Rev. Lett. 127, 040506 (2021)
The phenomenon of quantum entanglement marks one of the furthest departures from classical physics and is indispensable for quantum information processing. Despite its fundamental importance, the distribution of entanglement over long distances troug
Externí odkaz:
http://arxiv.org/abs/2101.11503
Publikováno v:
Quantum Sci. Technol. 6, 035013 (2021)
In state-of-the-art quantum key distribution (QKD) systems, the main limiting factor in increasing the key generation rate is the timing resolution in detecting photons. Here, we present and experimentally demonstrate a strategy to overcome this limi
Externí odkaz:
http://arxiv.org/abs/2009.03691
Autor:
Ecker, Sebastian, Bouchard, Frédéric, Bulla, Lukas, Brandt, Florian, Kohout, Oskar, Steinlechner, Fabian, Fickler, Robert, Malik, Mehul, Guryanova, Yelena, Ursin, Rupert, Huber, Marcus
Publikováno v:
Physical Review X, 9(4), 041042 (2019)
Noise can be considered the natural enemy of quantum information. An often implied benefit of high-dimensional entanglement is its increased resilience to noise. However, manifesting this potential in an experimentally meaningful fashion is challengi
Externí odkaz:
http://arxiv.org/abs/1904.01552