Zobrazeno 1 - 10
of 11 210
pro vyhledávání: '"A. Okonkwo"'
Autor:
Kalla, Besma, Cappelletti, Martina, Hout, Menno van den, van Vliet, Vincent, Rommel, Simon, Palmieri, Luca, Bradley, Thomas, Okonkwo, Chigo
We propose an optimized optical vector network analyzer with automatic polarization control to stabilize the reference arm polarization throughout the sweep range. We demonstrate this technique, successfully removing the polarization-induced fading a
Externí odkaz:
http://arxiv.org/abs/2410.06728
Autor:
Gümüş, Kadir, Frazão, João dos Reis, Albores-Mejia, Aaron, Škorić, Boris, Liga, Gabriele, Gültekin, Yunus Can, Bradley, Thomas, Alvarado, Alex, Okonkwo, Chigo
In this paper we introduce a reconciliation protocol with a two-step error correction scheme using a short blocklength low rate code and a long blocklength high rate code. We show that by using this two-step decoding method it is possible to achieve
Externí odkaz:
http://arxiv.org/abs/2409.13667
Autor:
Gümüş, Kadir, Frazão, João dos Reis, van Vliet, Vincent, van der Heide, Sjoerd, Hout, Menno van den, Liga, Gabriele, Gültekin, Yunus Can, Albores-Mejia, Aaron, Bradley, Thomas, Alvarado, Alex, Okonkwo, Chigo
Continuous-variable quantum key distribution (CV-QKD) has been proposed as a method for securely exchanging keys to protect against the security concerns caused by potential advancements in quantum computing. In addition to optical fiber transmission
Externí odkaz:
http://arxiv.org/abs/2408.12522
Autor:
Frazão, João dos Reis, van Vliet, Vincent, Gümüş, Kadir, Hout, Menno van den, van der Heide, Sjoerd, Albores-Mejia, Aaron, Škorić, Boris, Okonkwo, Chigo
Real-time CV-QKD receiver achieves peak 2.9 Mbit/s secret-key-rates over 12.8 km of fiber, while co-propagating 15 classical channels, separated 1 nm from the quantum signal. Performance degrades at higher launch powers due to crosstalk.
Externí odkaz:
http://arxiv.org/abs/2406.06540
Autor:
Frazão, João dos Reis, van Vliet, Vincent, van der Heide, Sjoerd, Hout, Menno van den, Gümüş, Kadir, Albores-Mejía, Aaron, Škorić, Boris, Okonkwo, Chigo
We demonstrate classical and quantum signal co-propagation over a turbulent free-space channel with 3 Tbit/s throughput and record 2.7 Mbit/s secret-key rate. Our real-time GPU-based receiver assessed quantum signal integrity under different turbulen
Externí odkaz:
http://arxiv.org/abs/2401.10581
Autor:
Carabajal, Amy Town, Orsot, Akoua, Moudio, Marie Pelagie Elimbi, Haggai, Tracy, Okonkwo, Chioma Joy, Jarrard III, George Truett, Selby, Nicholas Stearns
This study presents the first comprehensive analysis of the social and economic effects of solar mini-grids in rural African settings, specifically in Kenya and Nigeria. A group of 2,658 household heads and business owners connected to mini-grids ove
Externí odkaz:
http://arxiv.org/abs/2401.02445
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-22 (2024)
Abstract Most developing countries are currently experiencing a severe food security crisis. A good policy to mitigate food insecurity is dependent on accurate assessment. Therefore, an improved assessment of food situation is important in implementi
Externí odkaz:
https://doaj.org/article/d8e1e4960e864503ad0ed5870eac6eef
Autor:
Emori, Wilfred, Okonkwo, Paul C., Louis, Hitler, Liu, Ling, Agwamba, Ernest C., Unimuke, Tomsmith, Okafor, Peter, Atowon, Atowon D., Obike, Anthony Ikechukwu, Cheng, ChunRu
Publikováno v:
Pigment & Resin Technology, 2023, Vol. 53, Issue 6, pp. 911-922.
Externí odkaz:
http://www.emeraldinsight.com/doi/10.1108/PRT-04-2023-0034
Autor:
Gümüş, Kadir, Frazão, João dos Reis, van Vliet, Vincent, van der Heide, Sjoerd, Hout, Menno van den, Albores-Mejia, Aaron, Bradley, Thomas, Okonkwo, Chigo
We experimentally demonstrate adaptive reconciliation for continuous-variable quantum key distribution over a turbulent free-space optical channel. Additionally, we propose a method for optimising the reconciliation efficiency, increasing secret key
Externí odkaz:
http://arxiv.org/abs/2312.13835
Publikováno v:
Engineering and Technology Journal, Vol 42, Iss 11, Pp 1355-1366 (2024)
The behavior of subgrade materials plays a pivotal role in determining the longevity of transportation infrastructure. More often, interests had been focused on the mechanical behavior of treated soils prior to the failure stage, while the critical s
Externí odkaz:
https://doaj.org/article/0fca4ae91ffc4c629b610414c64d365c