Publications
2023
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Eichtheorien im Quantensimulator
Robert Ott, and Philipp Hauke
Phys. Unserer Zeit 5 ()
Electrodynamics on the lattice. Picture adapted from R. Ott, P. Hauke, "Eichtheorien im Quantensimulator", Physik in Unserer Zeit, September 2023. Gauge theories form the theoretical foundation of our understanding of many fields of science, in …
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Data re-uploading with a single qudit
Noah L. Wach, Manuel S. Rudolph, Fred Jendrzejewski, and Sebastian Schmitt
arXiv:2302.13932 [quant-ph]Quantum two-level systems, i.e. qubits, form the basis for most quantum machine learning approaches that have been proposed throughout the years. However, in some cases, higher dimensional quantum systems may prove to be advantageous. Here, we …
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Probing quantum correlations in many-body systems: a review of scalable methods
Irénée Frérot, Matteo Fadel, and Maciej Lewenstein
arXiv:2302.00640 [quant-ph]We review methods that allow one to detect and characterise quantum correlations in many-body systems, with a special focus on approaches which are scalable. Namely, those applicable to systems with many degrees of freedom, without requiring a number …
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Compilation of Entangling Gates for High-Dimensional Quantum Systems
Kevin Mato, Martin Ringbauer, Stefan Hillmich, and Robert Wille
arXiv:2301.04155 [quant-ph]Most quantum computing architectures to date natively support multi-valued logic, albeit being typically operated in a binary fashion. Multi-valued, or qudit, quantum processors have access to much richer forms of quantum entanglement, which promise …
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Preface: Characterisation of Physical Processes from Anomalous Diffusion Data
Carlo Manzo, Gorka Muñoz-Gil, Giovanni Volpe, Miguel Angel Garcia-March, Maciej Lewenstein, and Ralf Metzler
J. Phys. A: Math. Theor. 56, 010401 () | arXiv:2301.00800 [cond-mat.stat-mech]Preface to the special issue “Characterisation of Physical Processes from Anomalous Diffusion Data” associated with the Anomalous Diffusion Challenge (this https URL) and published in Journal of Physics A: Mathematical and Theoretical. …
2022
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Importance sampling for stochastic quantum simulations
Oriel Kiss, Michele Grossi, and Alessandro Roggero
arXiv:2212.05952 [quant-ph]Simulating complex quantum systems is a promising task for digital quantum computers. However, the depth of popular product formulas scales with the number of summands in the Hamiltonian, which can therefore be challenging to implement on near-term …
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Enhancing Qubit Readout with Autoencoders
Piero Luchi, Paolo E. Trevisanutto, Alessandro Roggero, Jonathan L. DuBois, Yaniv J. Rosen, Francesco Turro, Valentina Amitrano, and Francesco Pederiva
arXiv:2212.00080 [quant-ph]In addition to the need for stable and precisely controllable qubits, quantum computers take advantage of good readout schemes. Superconducting qubit states can be inferred from the readout signal transmitted through a dispersively coupled resonator. …
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Steady-state Peierls transition in nanotube quantum simulator
Lin Zhang, Utso Bhattacharya, Adrian Bachtold, Stefan Forstner, Maciej Lewenstein, Fabio Pistolesi, and Tobias Grass
npj Quantum Information 9, 7 () | arXiv:2206.08020 [cond-mat.str-el]Quantum dots placed along a vibrating nanotube provide a quantum simulation platform that can directly address the electronphonon interaction. This offers promising prospects for the search of new quantum materials and the study of strong correlation …