Unequal-time correlations

Short-time accuracy and intra-electron correlation for nonadiabatic quantum–classical mapping approaches

Nonadiabatic quantum–classical mapping approaches have significantly gained in popularity over the past several decades because they have acceptable accuracy while remaining numerically tractable even for large system sizes. In the recent few years, …

Qudit-native measurement protocol for dynamical correlations using Hadamard tests

Dynamical correlations reveal important out-of-equilibrium properties of the underlying quantum many-body system, yet they are notoriously difficult to measure in experiments. While measurement protocols for dynamical correlations based on Hadamard …

From non-Hermitian linear response to dynamical correlations and fluctuation–dissipation relations in quantum many-body systems

Quantum many-body systems are characterized by their correlations. While equal-time correlators and unequal-time commutators between operators are standard observables, the direct access to unequal-time *anti-commutators* poses a formidable …

ENERQUANT: Energiewirtschaftliche Fundamentalmodellierung mit Quantenalgorithmen