Zobrazeno 1 - 10
of 1 321
pro vyhledávání: '"Smirne A"'
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 excitation
Externí odkaz:
http://arxiv.org/abs/2411.17906
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 bath dynamics
Externí odkaz:
http://arxiv.org/abs/2407.17886
Publikováno v:
J. Chem. Phys. 161, 174114 (2024)
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 scaling with
Externí odkaz:
http://arxiv.org/abs/2407.10017
Autor:
Settimo, Federico, Luoma, Kimmo, Chruściński, Dariusz, Vacchini, Bassano, Smirne, Andrea, Piilo, Jyrki
Publikováno v:
Phys. Rev. A 109, 062201 (2024)
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 formalism.
Externí odkaz:
http://arxiv.org/abs/2402.12445
Publikováno v:
ANNALEN DER PHYSIK 2023, 2300304
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 outcomes, thes
Externí odkaz:
http://arxiv.org/abs/2312.06545
Publikováno v:
Phys. Rev. A 108, 062421 (2023)
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-dephasing spin
Externí odkaz:
http://arxiv.org/abs/2305.03436
Publikováno v:
Quantum Sci. Technol. 8, 035007 (2023)
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 dynamics c
Externí odkaz:
http://arxiv.org/abs/2212.13488
Publikováno v:
Open Systems & Information Dynamics 9, 2250008 (2022)
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-dependent co
Externí odkaz:
http://arxiv.org/abs/2209.02288
Publikováno v:
Open Systems & Information Dynamics 29, 2250019 (2022)
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 discrete enviro
Externí odkaz:
http://arxiv.org/abs/2209.00293
Autor:
Nüßeler, Alexander, Tamascelli, Dario, Smirne, Andrea, Lim, James, Huelga, Susana F., Plenio, Martin B.
Publikováno v:
Phys. Rev. Lett. 129, 140604 (2022)
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 countable infinity
Externí odkaz:
http://arxiv.org/abs/2208.01978