253 citations · 2.5k across the 70 of their papers we have counts for
71 papers
Reduced Quantum-Reference-Frame Channels for Open Quantum Systems
Paolo Luppi, Viktoria Kabel, Flaminia Giacomini +1
When reference frames are treated quantum mechanically, the subsystem structure of quantum systems is no longer absolute, but depends on the choice of the quantum reference frame (…
Schrödinger and Heisenberg non-Markovianity in quantum information tasks
Federico Settimo, Kimmo Luoma, Jyrki Piilo +3
Quantum non-Markovianity has been widely studied and connected to the existence of memory effects in the dynamics of open systems. Surprisingly, working in the Schrödinger or in th…
Revivals of Bell nonlocality require Schrödinger and Heisenberg non-Markovianity
Federico Settimo, Kimmo Luoma, Jyrki Piilo +3
Bell nonlocality is a key resource in quantum information, demonstrating the nonclassicality of quantum theory. Noise, however, is in general detrimental to nonlocality, and can ca…
Non-Markovianity in the Adapted Caldeira-Leggett model
Luciano Manara, Andrea Smirne, Bassano Vacchini
In this work, we investigate the non-Markovian features of the Adapted Caldeira-Leggett model, a computationally efficient framework recently proposed to capture the essential phys…
Multitime memory beyond the quantum regression theorem in sequential measurement statistics
Paolo Luppi, Claudia Benedetti, Andrea Smirne
We investigate the presence of memory in the sequential measurement statistics of an open quantum system, as witnessed by the departure from the quantum regression theorem (QRT), t…
Fluctuations of path-dependent thermodynamic quantities in open quantum systems via two-point system-only measurements
Alessandra Colla, Andrea Smirne, Heinz-Peter Breuer +1
We propose a method to evaluate general thermodynamic fluctuations in open quantum systems, based on performing a two-point measurement scheme on the system using dynamics-dependen…
Temporal nonclassicality in continuous-time quantum walks
Paolo Luppi, Claudia Benedetti, Andrea Smirne
We investigate the genuinely quantum features of continuous-time quantum walks by combining a single-time and a multi-time quantifier of nonclassicality. On the one hand, we consid…
Stochastic unravelings for Heisenberg picture and trace-nonpreserving dynamics
Federico Settimo, Kimmo Luoma, Dariusz Chruściński +3
Stochastic unravelings allow to efficiently simulate open system dynamics, yet their application has traditionally been restricted to master equations that preserve both Hermiticit…
Local energy assignment for two interacting quantum thermal reservoirs
Alessandra Colla, Bassano Vacchini, Andrea Smirne
Understanding how to assign internal energy, heat, and work in quantum systems beyond weak coupling remains a central problem in quantum thermodynamics, particularly as the differe…
Tunneling of bosonic qubits under local dephasing through microscopic approach
Alberto Ferrara, Farzam Nosrati, Andrea Smirne +2
We present a microscopic derivation of a master equation for two-component bosons (bosonic qubits) which tunnel between spatially separated modes under local dephasing noise. Start…
Quantum contextuality from measurement invasiveness
Andrea Navoni, Marco G. Genoni, Andrea Smirne
Contextuality is a defining feature that separates the quantum from the classical descriptions of physical systems. Within the marginal-scenario framework, noncontextual models are…
Classical pair of states as optimal pair for quantum distinguishability quantifiers
Bassano Vacchini, Andrea Smirne, Nina Megier
The capability to quantitatively distinguish quantum states is of great importance for a variety of tasks, and has recently played an important role in the study of quantum reduced…
Divisibility of dynamical maps: Schrödinger vs. Heisenberg picture
Federico Settimo, Andrea Smirne, Kimmo Luoma +3
Divisibility of dynamical maps is a central notion in the study of quantum non-Markovianity, providing a natural framework to characterize memory effects via time-local master equa…
Performance of rotation-symmetric bosonic codes in the presence of random telegraph noise
Adithi Udupa, Timo Hillmann, Rabsan Galib Ahmed +2
Decoherence in quantum devices, such as qubits and resonators, is often caused by bistable fluctuators modeled as random telegraph noise (RTN), leading to significant dephasing. We…
Dynamics of Open Quantum Systems with Initial System-Environment Correlations via Stochastic Unravelings
Federico Settimo, Kimmo Luoma, Dariusz Chruściński +3
In standard treatments of open quantum systems, the reduced dynamics is described starting from the assumption that the system and the environment are initially uncorrelated. This…
Driving Enhanced Exciton Transfer by Automatic Differentiation
E. Ballarin, D. A. Chisholm, A. Smirne +3
We model and study the processes of excitation, absorption, and transfer in various networks. The model consists of a harmonic oscillator representing a single-mode radiation field…
Pseudomode treatment of strong-coupling quantum thermodynamics
Francesco Albarelli, Bassano Vacchini, Andrea Smirne
The treatment of quantum thermodynamic systems beyond weak coupling is of increasing relevance, yet extremely challenging. The evaluation of thermodynamic quantities in strong-coup…
Spectral Density Modulation and Universal Markovian Closure of Fermionic Environments
Davide Ferracin, Andrea Smirne, Susana F. Huelga +2
The combination of chain-mapping and tensor-network techniques provides a powerful tool for the numerically exact simulation of open quantum systems interacting with structured env…
Generalized Rate Operator Quantum Jumps via Realization-Dependent Transformations
Federico Settimo, Kimmo Luoma, Dariusz Chruściński +3
The dynamics of open quantum systems is often solved by stochastic unravellings where the average over the state vector realizations reproduces the density matrix evolution. We foc…
Classical Invasive Description of Informationally-Complete Quantum Processes
Moritz F. Richter, Andrea Smirne, Walter T. Strunz +1
In classical stochastic theory, the joint probability distributions of a stochastic process obey by definition the Kolmogorov consistency conditions. Interpreting such a process as…
Invasiveness of non-equilibrium quantum thermometry
Francesco Albarelli, Matteo G. A. Paris, Bassano Vacchini +1
One of the main advantages expected from using quantum probes as thermometers is non invasiveness, i.e., a negligible perturbation to the thermal sample. However, invasiveness is r…
Charging a quantum battery in a non-Markovian environment: a collisional model approach
Daniele Morrone, Matteo A. C. Rossi, Andrea Smirne +1
We study the effect of non-Markovianity in the charging process of an open-system quantum battery. We employ a collisional model framework, where the environment is described by a…
On the use of total state decompositions for the study of reduced dynamics
Andrea Smirne, Nina Megier, Bassano Vacchini
The description of the dynamics of an open quantum system in the presence of initial correlations with the environment needs different mathematical tools than the standard approach…
Non-perturbative treatment of open-system multi-time expectation values in Gaussian bosonic environments
A. Smirne, D. Tamascelli, J. Lim +2
We determine the conditions for the equivalence between the multi-time expectation values of a general finite-dimensional open quantum system when interacting with, respectively, a…