49 citations · 146 across the 18 of their papers we have counts for
17 papers · 1 filter
A non-Markovian approach to spin-phonon coherence and the breakdown of the Markovian approximation
Mohamed Belhassen, Tim Schröder, Gregor Pieplow
Qubit coherence is an essential figure of merit for quantum information processing applications such as quantum computing, or quantum repeaters. Understanding the coherence propert…
Quantum Networks Using Color Defects in Diamond: Principles, Progress, and Perspectives
Ayan Majumder, Cem Güney Torun, Tim Schröder +3
Large-scale quantum networks will enable entirely new applications of quantum information science in fields such as quantum communication, distributed quantum computing, sensing, a…
Practical quantum tokens: challenges and perspectives
Nadezhda P. Kukharchyk, Holger Boche, Christian Deppe +21
The concept of quantum tokens dates back alongside quantum cryptography to Stephen Wiesner's seminal work in 1983[1]. Already this initial work proposes society-relevant applicatio…
Hybrid Quantum Repeater Chains with Semiconductor Quantum Dots and Group-IV-Vacancy Color Centers in Diamond
Yannick Strocka, Fenglei Gu, Gregor Pieplow +2
We propose and analyze a hybrid quantum repeater architecture that combines two leading hardware platforms: quantum dots (QDs) as bright, deterministic sources of entangled photon…
Software Framework for Optically Accessible Quantum Memory Using Group-IV Color Centers in Diamond
Yannick Strocka, Mohamed Belhassen, Tim Schröder +1
In the rapidly evolving field of quantum technology, the precise and detailed description of quantum components is not just a necessity but the foundation for advancing research, d…
Secure authentication via Quantum Physical Unclonable Functions: a review
Pol Julià Farré, Vladlen Galetsky, Mohamed Belhassen +6
Quantum Physical Unclonable Functions (QPUFs) offer a physically grounded approach to secure authentication, extending the capabilities of classical PUFs. This review covers their…
Quantum Secure Authentication with Color Centers in Diamond
Yannick Strocka, Mohamed Belhassen, Tim Schröder +1
We present a quantum token scheme in which the token is a quantum state that ensures secure authentication or payment. In our approach, rooted in Wiesner's quantum money concept, a…
Optical spin readout of a silicon color center in the telecom L-band
Shuyu Wen, Gregor Pieplow, Junchun Yang +6
Silicon-based quantum technologies have gained increasing attention due to their potential for large-scale photonic integration, long spin coherence times, and compatibility with C…
Retrieving Lost Atomic Information: Monte Carlo-based Parameter Reconstruction of an Optical Quantum System
Laura Orphal-Kobin, Gregor Pieplow, Alok Gokhale +2
In regimes of low signal strengths and therefore a small signal-to-noise ratio, standard data analysis methods often fail to accurately estimate system properties. We present a met…
Coherent microwave, optical, and mechanical quantum control of spin qubits in diamond
Laura Orphal-Kobin, Cem Güney Torun, Julian M. Bopp +2
Diamond has emerged as a highly promising platform for quantum network applications. Color centers in diamond fulfill the fundamental requirements for quantum nodes: they constitut…
Deterministic Creation of Large Photonic Multipartite Entangled States with Group-IV Color Centers in Diamond
Gregor Pieplow, Yannick Strocka, Mariano Isaza-Monsalve +2
Measurement-based quantum computation relies on single qubit measurements of large multipartite entangled states, so-called lattice-graph or cluster states. Graph states are also a…
Optical probing of phononic properties of a tin-vacancy color center in diamond
Cem Güney Torun, Joseph H. D. Munns, Franziska Marie Herrmann +12
The coherence characteristics of a tin-vacancy color center (SnV) in diamond are investigated through optical means, including linewidth broadening effects and coherent population…
SUPER and femtosecond spin-conserving coherent excitation of a tin-vacancy color center in diamond
Cem Güney Torun, Mustafa Gökçe, Thomas K. Bracht +11
The coherent excitation of an optically active spin system is one of the key elements in the engineering of a spin-photon interface. Using the novel SUPER scheme, we coherently con…
Efficient Microwave Spin Control of Negatively Charged Group-IV Color Centers in Diamond
Gregor Pieplow, Mohamed Belhassen, Tim Schröder
In this work, we provide a comprehensive overview of the microwave-induced manipulation of electronic spin states in negatively charged group-IV color centers in diamond with a par…
Resource-efficient fault-tolerant one-way quantum repeater with code concatenation
Kah Jen Wo, Guus Avis, Filip Rozpędek +6
One-way quantum repeaters where loss and operational errors are counteracted by quantum error correcting codes can ensure fast and reliable qubit transmission in quantum networks.…
'Sawfish' Photonic Crystal Cavity for Near-Unity Emitter-to-Fiber Interfacing in Quantum Network Applications
Julian M. Bopp, Matthias Plock, Tim Turan +3
Photon loss is one of the key challenges to overcome in complex photonic quantum applications. Photon collection efficiencies directly impact the amount of resources required for m…
Optically coherent nitrogen-vacancy defect centers in diamond nanostructures
Laura Orphal-Kobin, Kilian Unterguggenberger, Tommaso Pregnolato +6
Optically active solid-state spin defects have the potential to become a versatile resource for quantum information processing applications. Nitrogen-vacancy defect centers (NV) in…