activity
20202026
most citedThe Bitter Truth About Quantum Algorithms in the NISQ Era

231 citations · 427 across the 21 of their papers we have counts for

collaborators

26 papers

physics.gen-ph2026

Mathematics of Spacetime: A Guided Tour Through The Underlying Differential Topology and Differential Geometry

Johanna Barzen, Frank Leymann

Background in General Relativity (e.g. black holes, wormholes, or spacetime models in general) is needed to comprehend more recent efforts around understanding quantum phenomena li…

quant-ph2025

Loss Behavior in Supervised Learning with Entangled States

Alexander Mandl, Johanna Barzen, Marvin Bechtold +2

Quantum Machine Learning (QML) aims to leverage the principles of quantum mechanics to speed up the process of solving machine learning problems or improve the quality of solutions…

quant-ph2025★ 2 cited

On the Differential Topology of Expressivity of Parameterized Quantum Circuits

Johanna Barzen, Frank Leymann

Parameterized quantum circuits play a key role in quantum computing. Measuring the suitability of such a circuit for solving a class of problems is needed. One such promising measu…

quant-ph2025

Simulating Quantum State Transfer between Distributed Devices using Noisy Interconnects

Marvin Bechtold, Johanna Barzen, Frank Leymann +1

Scaling beyond individual quantum devices via distributed quantum computing relies critically on high-fidelity quantum state transfers between devices, yet the quantum interconnect…

quant-ph2025

Harnessing Patterns to Support the Development of Hybrid Quantum Applications

Daniel Vietz, Martin Beisel, Johanna Barzen +3

Quantum computing provides computational advantages in various domains. To benefit from these advantages complex hybrid quantum applications must be built, which comprise both quan…

quant-ph2024

Qunicorn: A Middleware for the Unified Execution Across Heterogeneous Quantum Cloud Offerings

Benjamin Weder, Johanna Barzen, Martin Beisel +4

Quantum computers are available via a variety of different quantum cloud offerings. These offerings are heterogeneous and differ in features, such as pricing models or types of acc…