2.3k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Interdisciplinary Centre for Security, Reliability and TrustLU193 papers
- Centre National de la Recherche ScientifiqueFR133 papers
- Luxembourg Institute of Science and TechnologyLU105 papers
- Donostia International Physics CenterES66 papers
- Forschungszentrum JülichDE37 papers
- Polish Academy of SciencesPL36 papers
- University of CambridgeGB36 papers
- Luxembourg Centre for Systems BiomedicineLU34 papers
- Technische Universität BerlinDE34 papers
- University of OttawaCA34 papers
- Université de LorraineFR31 papers
- University of LiègeBE30 papers
22 papers · 2 filters
Krylov Complexity and Dynamical Phase Transition in the quenched LMG model
Pedro H. S. Bento, Adolfo del Campo, Lucas C. Céleri
Investigating the time evolution of complexity in quantum systems entails evaluating the spreading of the system's state across a defined basis in its corresponding Hilbert space.…
Diagnosing non-Hermitian Many-Body Localization and Quantum Chaos via Singular Value Decomposition
Federico Roccati, Federico Balducci, Ruth Shir +1
Strong local disorder in interacting quantum spin chains can turn delocalized eigenmodes into localized eigenstates, giving rise to many-body localized (MBL) phases. This is accomp…
Decomposing the Spectral Form Factor
Pablo Martinez-Azcona, Ruth Shir, Aurélia Chenu
Correlations between the energies of a system's spectrum are one of the defining features of quantum chaos. They can be probed using the Spectral Form Factor (SFF). We investigate…
Measuring nuclear spin qubits by qudit-enhanced spectroscopy in Silicon Carbide
Erik Hesselmeier, Pierre Kuna, István Takács +8
Nuclear spins with hyperfine coupling to single electron spins are highly valuable quantum bits. In this work we probe and characterise the particularly rich nuclear spin environme…
Spectral stability of V2 centres in sub-micron 4H-SiC membranes
Jonah Heiler, Jonathan Körber, Erik Hesselmeier +9
Colour centres in silicon carbide emerge as a promising semiconductor quantum technology platform with excellent spin-optical coherences.However, recent efforts towards maximising…
Unitarity breaking in self-averaging spectral form factors
Apollonas S. Matsoukas-Roubeas, Mathieu Beau, Lea F. Santos +1
The complex Fourier transform of the two-point correlator of the energy spectrum of a quantum system is known as the spectral form factor (SFF). It constitutes an essential diagnos…
Large Deviations Beyond the Kibble-Zurek Mechanism
Federico Balducci, Mathieu Beau, Jing Yang +2
The Kibble-Zurek mechanism (KZM) predicts that the average number of topological defects generated upon crossing a continuous or quantum phase transition obeys a universal scaling…
System-bath entanglement of noninteracting fermionic impurities: Equilibrium, transient, and steady-state regimes
Krzysztof Ptaszynski, Massimiliano Esposito
We investigate the behavior of entanglement between a single fermionic level and a fermionic bath in three distinct thermodynamic regimes. First, in thermal equilibrium, we analyze…
Modeling Non-Covalent Interatomic Interactions on a Photonic Quantum Computer
Matthieu Sarkis, Alessio Fallani, Alexandre Tkatchenko
Non-covalent interactions are a key ingredient to determine the structure, stability, and dynamics of materials, molecules, and biological complexes. However, accurately capturing…
Quantum Chaos and Coherence: Random Parametric Quantum Channels
Apollonas S. Matsoukas-Roubeas, Tomaž Prosen, Adolfo del Campo
The survival probability of an initial Coherent Gibbs State (CGS) is a natural extension of the Spectral Form Factor (SFF) to open quantum systems. To quantify the interplay betwee…
Tight lower bounds on the time it takes to generate a geometric phase
Niklas Hörnedal, Ole Sönnerborn
Geometric phase is a concept of central importance in virtually every branch of physics. In this paper, we show that the evolution time of a cyclically evolving quantum system is r…
A convenient Keldysh contour for thermodynamically consistent perturbative and semiclassical expansions
Vasco Cavina, Sadeq S. Kadijani, Massimiliano Esposito +1
The work fluctuation theorem (FT) is a symmetry connecting the moment generating functions (MGFs) of the work extracted in a given process and in its time-reversed counterpart. We…
Quantum and classical contributions to entropy production in fermionic and bosonic Gaussian systems
Krzysztof Ptaszynski, Massimiliano Esposito
As previously demonstrated, the entropy production -- a key quantity characterizing the irreversibility of thermodynamic processes -- is related to generation of correlations betwe…
Closed systems refuting quantum-speed-limit hypotheses
Niklas Hörnedal, Ole Sönnerborn
Many quantum speed limits for isolated systems can be generalized to also apply to closed systems. This is, for example, the case with the well-known Mandelstam-Tamm quantum speed…
Hermitian and Non-Hermitian Topology from Photon-Mediated Interactions
Federico Roccati, Miguel Bello, Zongping Gong +4
Light can mediate effective dipole-dipole interactions between atoms or quantum emitters coupled to a common environment. Exploiting them to tailor a desired effective Hamiltonian…
Stochastic Operator Variance: an observable to diagnose noise and scrambling
Pablo Martinez-Azcona, Aritra Kundu, Adolfo del Campo +1
Noise is ubiquitous in nature, so it is essential to characterize its effects. Considering a fluctuating Hamiltonian, we introduce an observable, the stochastic operator variance (…
Two-point measurement energy statistics from particle scattering
Samuel L. Jacob, Gabriel T. Landi, Massimiliano Esposito +1
We show that the energy statistics resulting from a two-point measurement of an isolated quantum system subject to a time-dependent driving protocol can be probed by subjecting the…
Thermalization and dephasing in collisional reservoirs
Jorge Tabanera-Bravo, Juan M. R. Parrondo, Massimiliano Esposito +1
We introduce a wide class of quantum maps that arise in collisional reservoirs and are able to thermalize a system if they operate in conjunction with an additional dephasing mecha…
Shortcuts to Adiabaticity in Krylov Space
Kazutaka Takahashi, Adolfo del Campo
Shortcuts to adiabaticity provide fast protocols for quantum state preparation in which the use of auxiliary counterdiabatic controls circumvents the requirement of slow driving in…
From Dyson Models to Many-Body Quantum Chaos
Alexei Andreanov, Matteo Carrega, Jeff Murugan +3
A deep understanding of the mechanisms underlying many-body quantum chaos is one of the big challenges in contemporary theoretical physics. We tackle this problem in the context of…
Margolus-Levitin quantum speed limit for an arbitrary fidelity
Niklas Hörnedal, Ole Sönnerborn
The Mandelstam-Tamm and Margolus-Levitin quantum speed limits are two well-known evolution time estimates for isolated quantum systems. These bounds are usually formulated for full…
Geometric Operator Quantum Speed Limit, Wegner Hamiltonian Flow and Operator Growth
Niklas Hörnedal, Nicoletta Carabba, Kazutaka Takahashi +1
Quantum speed limits (QSLs) provide lower bounds on the minimum time required for a process to unfold by using a distance between quantum states and identifying the speed of evolut…