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
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
Finding critical states of enhanced memory capacity in attractive cold bosons
EPJ Quantum Technology - Tập 6 - Trang 1-36 - 2019
Gia Dvali, Marco Michel, Sebastian Zell
We discuss a class of quantum theories which exhibit a sharply increased memory storage capacity due to emergent gapless degrees of freedom. Their realization, both theoretical and experimental, is of great interest. On the one hand, such systems are motivated from a quantum information point of view. On the other hand, they can provide a framework for simulating systems with enhanced capacity of ...... hiện toàn bộ
Dissipative generation of significant amount of photon-phonon asymmetric steering in magnomechanical interfaces
EPJ Quantum Technology - Tập 10 - Trang 1-12 - 2023
Tian-Ang Zheng, Ye Zheng, Lei Wang, Chang-Geng Liao
A theoretical scheme is proposed to generate significant amount of photon-phonon entanglement and asymmetric steering in a cavity magnomechanical system, which is constituted by trapping a yttrium iron garnet sphere in a microwave cavity. By applying a blue-detuned microwave driving field, we obtain an effective Hamiltonian where the magnon mode acting as an engineered resevoir cools the Bogoliubo...... hiện toàn bộ
Efficient excitation-transfer across fully connected networks via local-energy optimization
EPJ Quantum Technology - Tập 11 Số 1 - 2024
S. Sgroi, Giorgio Zicari, Alberto Imparato, Mauro Paternostro
AbstractWe study the excitation transfer across a fully connected quantum network whose sites energies can be artificially designed. Starting from a simplified model of a broadly-studied physical system, we systematically optimize its local energies to achieve high excitation transfer for various environmental conditions, using an adaptive Gradient Descent techniqu...... hiện toàn bộ
Efficient quantum simulation of fermionic and bosonic models in trapped ions
EPJ Quantum Technology - - 2014
Lucas Lamata, Antonio Mezzacapo, Jorge Casanova, E. Solano
A study of polarization compensation for quantum networks
EPJ Quantum Technology - Tập 10 - Trang 1-11 - 2023
Matej Peranić, Marcus Clark, Rui Wang, Sima Bahrani, Obada Alia, Sören Wengerowsky, Anton Radman, Martin Lončarić, Mario Stipčević, John Rarity, Reza Nejabati, Siddarth Koduru Joshi
The information-theoretic unconditional security offered by quantum key distribution has spurred the development of larger quantum communication networks. However, as these networks grow so does the strong need to reduce complexity and overheads. Polarization-based entanglement distribution networks are a promising approach due to their scalability and no need for trusted nodes. Nevertheless, they...... hiện toàn bộ
Startup Qilimanjaro—towards a European full-stack coherent quantum annealer platform
EPJ Quantum Technology - Tập 8 - Trang 1-9 - 2021
V. Canivell, P. Forn-Díaz, A. Garcia-Saez, R. Sagastizabal
Qilimanjaro Quantum Tech is the full-stack quantum spin-off of three research institutions, the Barcelona Supercomputing Center (BSC), the Institute for High Energy Physics (IFAE) and the University of Barcelona (UB). The company addresses the emerging quantum readiness demand from industry and academia, by providing both algorithmic development services as well as access to a new coherent quantum...... hiện toàn bộ
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