activity
20222026
most citedNon-perturbative treatment of giant atoms using chain transformations

31 citations · 31 across the 7 of their papers we have counts for

collaborators

7 papers

quant-ph2026

Hybrid Quantum-Classical Neural Networks for Recognizing Quantum Phases

Colin Scarato, Johannes Knörzer, Markus K. Hoffmann +11

Identifying quantum phases of matter is key to understanding strongly correlated materials, but remains a challenging task for both conventional computers and current quantum proce…

quant-ph2026

Hybrid quantum-classical neural network for sample-efficient recognition of topological phases

Markus K. Hoffmann, Leon C. Sander, Colin Scarato +4

With increasing maturity of quantum computers, standard methods for characterizing global properties of their output quantum states via direct measurements and classical post-proce…

quant-ph2026

Random Projections for Multi-Copy Quantum Algorithms

Xiaoyu Liu, Jordi Tura, Johannes Knörzer

Estimating nonlinear properties of quantum states is a central task in quantum information science. Multivariate traces, , and nonlinear observables su…

quant-ph2025

Non-Exponential Decay in Finite Photonic Waveguide Arrays

Florian H. Huber, Benedikt Braumandl, Johannes Knörzer +5

Open quantum-system dynamics can follow exponential decay, non-exponential relaxation, or oscillatory dynamics, depending on the system-environment coupling. We study a lattice wit…

quant-ph2024

Generalized Concentratable Entanglement via Parallelized Permutation Tests

Xiaoyu Liu, Johannes Knörzer, Zherui Jerry Wang +1

Multipartite entanglement is an essential resource for quantum information theory and technologies, but its quantification has been a persistent challenge. Recently, Concentratable…

quant-ph2024

Fermionization and collective excitations of 1D polariton lattices

Johannes Knörzer, Rafał Ołdziejewski, Puneet A. Murthy +1

We theoretically demonstrate that the hallmarks of correlation and fermionization in a one-dimensional exciton-polaritons gas can be observed with state-of-the-art technology. Our…

quant-ph2022★ 31 cited

Non-perturbative treatment of giant atoms using chain transformations

David D. Noachtar, Johannes Knörzer, Robert H. Jonsson

Superconducting circuits coupled to acoustic waveguides have extended the range of phenomena that can be experimentally studied using tools from quantum optics. In particular giant…