EPJ Quantum Technology

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Effect of external magnetic fields on practical quantum random number generator
EPJ Quantum Technology - Tập 10 - Trang 1-17 - 2023
Yuan-Hao Li, Yang-Yang Fei, Wei-Long Wang, Xiang-Dong Meng, Hong Wang, Qian-Heng Duan, Yu Han, Zhi Ma
Quantum random number generator (QRNG) based on the inherent randomness of fundamental quantum processes can provide provable true random numbers which play an important role in many fields. However, the security of practical QRNGs is linked to the performance of realistic devices. In particular, devices based on the Faraday effect in a QRNG system may be affected by external magnetic fields, whic...... hiện toàn bộ
Authentication of variable length messages in quantum key distribution
EPJ Quantum Technology - - 2022
Khodakhast Bibak, Bruce M. Kapron, Venkatesh Srinivasan
AbstractAuthentication plays a critical role in the security of quantum key distribution (QKD) protocols. We propose using Polynomial Hash and its variants for authentication of variable length messages in QKD protocols. Since universal hashing is used not only for authentication in QKD but also in other steps in QKD like error correction and privacy amplification,...... hiện toàn bộ
Trapped-ion quantum simulation of tunable-range Heisenberg chains
EPJ Quantum Technology - Tập 1 - Trang 1-20 - 2014
Tobias Graß, Maciej Lewenstein
Quantum-optical techniques allow for generating controllable spin-spin interactions between ions, making trapped ions an ideal quantum simulator of Heisenberg chains. A single parameter, the detuning of the Raman coupling, allows to switch between ferromagnetic and antiferromagnetic chains, and to modify the range of the interactions. On the antiferromagnetic side, the system can be tuned from an ...... hiện toàn bộ
Silicon nanophotonics for scalable quantum coherent feedback networks
EPJ Quantum Technology - Tập 3 - Trang 1-18 - 2016
Mohan Sarovar, Daniel BS Soh, Jonathan Cox, Constantin Brif, Christopher T DeRose, Ryan Camacho, Paul Davids
The emergence of coherent quantum feedback control (CQFC) as a new paradigm for precise manipulation of dynamics of complex quantum systems has led to the development of efficient theoretical modeling and simulation tools and opened avenues for new practical implementations. This work explores the applicability of the integrated silicon photonics platform for implementing scalable CQFC networks. I...... hiện toàn bộ
Towards European standards for quantum technologies
EPJ Quantum Technology - Tập 9 - Trang 1-41 - 2022
Oskar van Deventer, Nicolas Spethmann, Marius Loeffler, Michele Amoretti, Rob van den Brink, Natalia Bruno, Paolo Comi, Noel Farrugia, Marco Gramegna, Andreas Jenet, Ben Kassenberg, Wojciech Kozlowski, Thomas Länger, Tobias Lindstrom, Vicente Martin, Niels Neumann, Homer Papadopoulos, Saverio Pascazio, Momtchil Peev, Richard Pitwon, M. Adriaan Rol, Paolo Traina, Pim Venderbosch, Frank K. Wilhelm-Mauch
The Second Quantum Revolution facilitates the engineering of new classes of sensors, communication technologies, and computers with unprecedented capabilities. Supply chains for quantum technologies are emerging, some focused on commercially available components for enabling technologies and/or quantum-technologies research infrastructures, others with already higher technology-readiness levels, n...... hiện toàn bộ
Nanobob: a CubeSat mission concept for quantum communication experiments in an uplink configuration
EPJ Quantum Technology - Tập 5 - Trang 1-30 - 2018
Erik Kerstel, Arnaud Gardelein, Mathieu Barthelemy, Matthias Fink, Siddarth Koduru Joshi, Rupert Ursin
We present a ground-to-space quantum key distribution (QKD) mission concept and the accompanying feasibility study for the development of the associated low earth orbit nanosatellite payload. The quantum information is carried by single photons with the binary codes represented by polarization states of the photons. Distribution of entangled photons between the ground and the satellite can be used...... hiện toàn bộ
Analog quantum simulation of gravitational waves in a Bose-Einstein condensate
EPJ Quantum Technology - Tập 2 - Trang 1-9 - 2015
Tupac Bravo, Carlos Sabín, Ivette Fuentes
We show how to vary the physical properties of a Bose-Einstein condensate (BEC) in order to mimic an effective gravitational-wave spacetime. In particular, we focus in the simulation of the recently discovered creation of particles by a real spacetime distortion in box-type traps. We show that, by modulating the speed of sound in the BEC, the phonons experience the effects of a simulated spacetime...... hiện toàn bộ
Quantum teleportation of propagating quantum microwaves
EPJ Quantum Technology - Tập 2 - Trang 1-17 - 2015
R Di Candia, KG Fedorov, L Zhong, S Felicetti, EP Menzel, M Sanz, F Deppe, A Marx, R Gross, E Solano
Propagating quantum microwaves have been proposed and successfully implemented to generate entanglement, thereby establishing a promising platform for the realisation of a quantum communication channel. However, the implementation of quantum teleportation with photons in the microwave regime is still absent. At the same time, recent developments in the field show that this key protocol could be fe...... hiện toàn bộ
Towards security recommendations for public-key infrastructures for production environments in the post-quantum era
EPJ Quantum Technology - Tập 8 - Trang 1-19 - 2021
Sergey E. Yunakovsky, Maxim Kot, Nikolay Pozhar, Denis Nabokov, Mikhail Kudinov, Anton Guglya, Evgeniy O. Kiktenko, Ekaterina Kolycheva, Alexander Borisov, Aleksey K. Fedorov
Quantum computing technologies pose a significant threat to the currently employed public-key cryptography protocols. In this paper, we discuss the impact of the quantum threat on public key infrastructures (PKIs), which are used as a part of security systems for protecting production environments. We analyze security issues of existing models with a focus on requirements for a fast transition to ...... hiện toàn bộ
Trapped modes in linear quantum stochastic networks with delays
EPJ Quantum Technology - Tập 3 Số 1 - 2016
Gil Tabak, Hideo Mabuchi
Tổng số: 157   
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