108 citations · 331 across the 9 of their papers we have counts for
11 papers
On Information Propagation in Krylov Subspaces
Pablo Martinez-Azcona, Maximilian Meyer-Moelleringhof, Adolfo del Campo +1
Krylov subspace methods provide an efficient tool for modeling any quantum initial value problem as a one dimensional chain. A time ordered path formulation, in which the dynamical…
Generating random unitaries by products of conjugated Hamiltonian evolutions
Oscar Scholin, Apollonas S. Matsoukas-Roubeas, Sathyawageeswar Subramanian
Random unitary operations are a fundamental resource for quantum information processing, yet provably generating them with experimentally available controls remains challenging. Ex…
Randomised measurements of a disorder-induced entanglement transition in a neutral atom quantum processor
Apollonas S. Matsoukas-Roubeas, Oscar Scholin, Lucas Sá +5
The development and spread of entanglement in complex quantum systems is central to exploring many-body phenomena out of equilibrium. Measuring entanglement dynamics can shed light…
Reducing dynamical fluctuations and enforcing self-averaging by opening many-body quantum systems
Isaias Vallejo-Fabila, Adway Kumar-Das, David A. Zarate-Herrada +3
We investigate how the dynamical fluctuations of many-body quantum systems out of equilibrium can be mitigated when they are opened to a dephasing environment. We consider the surv…
Quantum Dynamics in Krylov Space: Methods and Applications
Pratik Nandy, Apollonas S. Matsoukas-Roubeas, Pablo Martínez-Azcona +2
The dynamics of quantum systems unfolds within a subspace of the state space or operator space, known as the Krylov space. This review presents the use of Krylov subspace methods t…
Proposal for many-body quantum chaos detection
Adway Kumar Das, Cameron Cianci, Delmar G. A. Cabral +8
In this work, the term ``quantum chaos'' refers to spectral correlations similar to those found in the random matrix theory. Quantum chaos can be diagnosed through the analysis of…
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…
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…
Non-Hermitian Hamiltonian Deformations in Quantum Mechanics
Apollonas S. Matsoukas-Roubeas, Federico Roccati, Julien Cornelius +3
The construction of exactly-solvable models has recently been advanced by considering integrable deformations and related Hamiltonian deformations in quantum mechanics.…
Ultimate Speed Limits to the Growth of Operator Complexity
Niklas Hörnedal, Nicoletta Carabba, Apollonas S. Matsoukas-Roubeas +1
In an isolated system, the time evolution of a given observable in the Heisenberg picture can be efficiently represented in Krylov space. In this representation, an initial operato…
Exploring helical phases of matter in bosonic ladders
Andreas Haller, Apollonas S. Matsoukas-Roubeas, Yueting Pan +2
Ladder models of ultracold atoms offer a versatile platform for the experimental and theoretical study of different phenomena and phases of matter linked to the interplay between a…