Andrea Smirne
YOU?
Author Swipe
View article: Local energy assignment for two interacting quantum thermal reservoirs
Local energy assignment for two interacting quantum thermal reservoirs Open
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 difference between competing definitions becomes increasingly rele…
View article: Tunneling of bosonic qubits under local dephasing through microscopic Lindblad approach
Tunneling of bosonic qubits under local dephasing through microscopic Lindblad approach Open
We consider a system composed of two distinct spatial regions, populated by two-component bosons coupled through a tunneling process. Local dephasing noise acts independently on each region, enabling competition between coherent dynamics a…
View article: Simulation of quantum contextuality with invasive-measurement maps
Simulation of quantum contextuality with invasive-measurement maps Open
Contextuality is a defining feature that separates the quantum from the classical descriptions of physical systems. Building upon the marginal-scenario framework, we introduce a general method to characterize contextuality through stochast…
View article: Classical pair of states as optimal pair for quantum distinguishability quantifiers
Classical pair of states as optimal pair for quantum distinguishability quantifiers Open
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 dynamics and their characterization in terms of memory eff…
View article: Driving enhanced exciton transfer by automatic differentiation
Driving enhanced exciton transfer by automatic differentiation Open
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, a two-level system acting as an antenna, a network throug…
View article: Dynamics of Open Quantum Systems with Initial System-Environment Correlations via Stochastic Unravelings
Dynamics of Open Quantum Systems with Initial System-Environment Correlations via Stochastic Unravelings Open
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 assumption, however, is not always guaranteed in realistic …
View article: Driving Enhanced Exciton Transfer by Automatic Differentiation
Driving Enhanced Exciton Transfer by Automatic Differentiation Open
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, a qubit acting as an antenna, a network through which the…
View article: Pseudomode treatment of strong-coupling quantum thermodynamics
Pseudomode treatment of strong-coupling quantum thermodynamics Open
The treatment of quantum thermodynamic systems beyond weak coupling is of increasing relevance, yet extremely challenging. The evaluation of thermodynamic quantities in strong-coupling regimes requires a nonperturbative knowledge of the ba…
View article: Spectral density modulation and universal Markovian closure of fermionic environments
Spectral density modulation and universal Markovian closure of fermionic environments Open
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 environments. However, these methods suffer from a quadratic s…
View article: Pseudomode treatment of strong-coupling quantum thermodynamics
Pseudomode treatment of strong-coupling quantum thermodynamics Open
The treatment of quantum thermodynamic systems beyond weak coupling is of increasing relevance, yet extremely challenging. The evaluation of thermodynamic quantities in strong-coupling regimes requires a nonperturbative knowledge of the ba…
View article: Spectral Density Modulation and Universal Markovian Closure of Fermionic Environments
Spectral Density Modulation and Universal Markovian Closure of Fermionic Environments Open
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 environments. However, these methods suffer from a quadratic s…
View article: Generalized-rate-operator quantum jumps via realization-dependent transformations
Generalized-rate-operator quantum jumps via realization-dependent transformations Open
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 focus on quantum jump descriptions based on the rate operator …
View article: Invasiveness of nonequilibrium pure-dephasing quantum thermometry
Invasiveness of nonequilibrium pure-dephasing quantum thermometry Open
One of the main advantages expected from using quantum probes as thermometers is noninvasiveness, i.e., a negligible perturbation to the thermal sample. However, invasiveness is rarely investigated explicitly. Here, focusing on a spin prob…
View article: Classical Invasive Description of Informationally‐Complete Quantum Processes
Classical Invasive Description of Informationally‐Complete Quantum Processes Open
In classical stochastic theory, the joint probability distributions of a stochastic process obey by definition the Kolmogorov consistency conditions. Interpreting such a process as a sequence of physical measurements with probabilistic out…
View article: Invasiveness of non-equilibrium quantum thermometry
Invasiveness of non-equilibrium quantum thermometry Open
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 rarely investigated explicitly. Here, focusing on a pure-dep…
View article: Charging a quantum battery in a non-Markovian environment: a collisional model approach
Charging a quantum battery in a non-Markovian environment: a collisional model approach Open
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 discrete set of ancillary systems and memory effects in the…
View article: Quantum Information Concepts in Open Quantum Systems
Quantum Information Concepts in Open Quantum Systems Open
This issue contains contributions in different cutting edge topics within the field of open quantum systems. The theoretical work presented is focused, in particular, on quantum thermodynamics and quantum non-Markovianity and provides a wi…
View article: Charging a quantum battery in a non-Markovian environment: a collisional model approach
Charging a quantum battery in a non-Markovian environment: a collisional model approach Open
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 discrete set of ancillary systems and memory effects in the…
View article: Non-Perturbative Treatment of Open-System Multi-Time Expectation Values in Gaussian Bosonic Environments
Non-Perturbative Treatment of Open-System Multi-Time Expectation Values in Gaussian Bosonic Environments Open
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, an environment undergoing a free unitary evolution or a disc…
View article: How to design quantum-jump trajectories via distinct master equation representations
How to design quantum-jump trajectories via distinct master equation representations Open
Every open-system dynamics can be associated to infinitely many stochastic pictures, called unravelings, which have proved to be extremely useful in several contexts, both from the conceptual and the practical point of view. Here, focusing…
View article: Fingerprint and Universal Markovian Closure of Structured Bosonic Environments
Fingerprint and Universal Markovian Closure of Structured Bosonic Environments Open
We exploit the properties of chain mapping transformations of bosonic environments to identify a finite collection of modes able to capture the characteristic features, or fingerprint, of the environment. Moreover we show that the countabl…
View article: On the use of total state decompositions for the study of reduced dynamics
On the use of total state decompositions for the study of reduced dynamics Open
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 to reduced dynamics, which is based on the use of a time-d…
View article: Fingerprint and universal Markovian closure of structured bosonic environments
Fingerprint and universal Markovian closure of structured bosonic environments Open
We exploit the properties of chain mapping transformations of bosonic environments to identify a finite collection of modes able to capture the characteristic features, or fingerprint, of the environment. Moreover we show that the countabl…
View article: Holevo skew divergence for the characterization of information backflow
Holevo skew divergence for the characterization of information backflow Open
The interpretation of non-Markovian effects as due to the information exchange between an open quantum system and its environment has been recently formulated in terms of properly regularized entropic quantities, as their revivals in time …
View article: On the Use of Total State Decompositions for the Study of Reduced Dynamics
On the Use of Total State Decompositions for the Study of Reduced Dynamics Open
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 to reduced dynamics, which is based on the use of a time-d…
View article: Correlations, Information Backflow, and Objectivity in a Class of Pure Dephasing Models
Correlations, Information Backflow, and Objectivity in a Class of Pure Dephasing Models Open
We critically examine the role that correlations established between a system and fragments of its environment play in characterising the ensuing dynamics. We employ a dephasing model with different initial conditions, where the state of t…
View article: Experimentally determining the incompatibility of two qubit measurements
Experimentally determining the incompatibility of two qubit measurements Open
We describe and realize an experimental procedure for assessing the incompatibility of two qubit measurements. The experiment consists in a state discrimination task where either measurement is used according to some partial intermediate i…
View article: Holevo skew divergence for the characterization of information backflow
Holevo skew divergence for the characterization of information backflow Open
The interpretation of non-Markovian effects as due to the information exchange between an open quantum system and its environment has been recently formulated in terms of properly regularized entropic quantities, as their revivals in time …
View article: Transfer-tensor description of memory effects in open-system dynamics and multi-time statistics
Transfer-tensor description of memory effects in open-system dynamics and multi-time statistics Open
The non-Markovianity of an arbitrary open quantum system is analyzed in reference to the multi-time statistics given by its monitoring at discrete times. On the one hand, we exploit the hierarchy of inhomogeneous transfer tensors (TTs), wh…
View article: Adapted projection operator technique for the treatment of initial correlations
Adapted projection operator technique for the treatment of initial correlations Open
The standard theoretical descriptions of the dynamics of open quantum systems rely on the assumption that the correlations with the environment can be neglected at some reference (initial) time. While being reasonable in specific instances…