Steady-state coherences by composite system-bath interactions

G Guarnieri, M Kolář, R Filip - Physical review letters, 2018 - APS
We identify sufficient conditions on the structure of the interaction Hamiltonian between a
two-level quantum system and a thermal bath that, without any external drive or coherent …

Statistical mechanics at strong coupling: a bridge between landsberg's energy levels and hill's nanothermodynamics

R de Miguel, JM Rubí - Nanomaterials, 2020 - mdpi.com
We review and show the connection between three different theories proposed for the
thermodynamic treatment of systems not obeying the additivity ansatz of classical …

Local coherence by thermalized intra-system coupling

M Kolář, R Filip - Quantum Science and Technology, 2024 - iopscience.iop.org
Quantum superposition of energy eigenstates can appear autonomously in a single
quantum two-level system coupled to a low-temperature thermal bath, if such coupling has a …

Pairwise-measurement-induced synthesis of quantum coherence

M Gumberidze, M Kolář, R Filip - Physical Review A, 2022 - APS
Quantum coherent superpositions of states with different energies, ie, states with coherence
with respect to energy basis, are an important resource for modern quantum technologies …

Thermodynamics far from the thermodynamic limit

R de Miguel, JM Rubí - The Journal of Physical Chemistry B, 2017 - ACS Publications
Understanding how small systems exchange energy with a heat bath is important to
describe how their unique properties can be affected by the environment. In this contribution …

[PDF][PDF] Heat capacities of thermally manipulated mechanical oscillator at strong coupling

M Kolár, A Ryabov, R Filip - arxiv preprint arxiv:1806.08606, 2018 - researchgate.net
Coherent quantum oscillators are basic physical systems both in quantum statistical physics
and quantum thermodynamics. Their realizations in lab often involve solid-state devices …

Higher-order interactions in quantum optomechanics: Analytical solution of nonlinearity

S Khorasani - Photonics, 2017 - mdpi.com
A method is described to solve the nonlinear Langevin equations arising from quadratic
interactions in quantum mechanics. While the zeroth order linearization approximation to the …

Achieving local coherence in thermal states by intra-system coupling

M Kolář, G Guarnieri, R Filip - arxiv preprint arxiv:2211.08851, 2022 - arxiv.org
Quantum superposition of energy eigenstates can appear autonomously in a single
quantum two-level system coupled to a low-temperature thermal bath, if such coupling has a …

Rayleigh–Schrödinger Perturbation Theory and Nonadditive Thermodynamics

R de Miguel - The Journal of Physical Chemistry B, 2023 - ACS Publications
Physical chemists reconcile the empirical theory of classical thermodynamics with the
quantum nature of matter and energy when they recover thermodynamics from a statistical …

Internal geometric friction in a Kitaev-chain heat engine

E Yunt, M Fadaie, ÖE Müstecaplıoğlu, CM Smith - Physical Review B, 2020 - APS
We investigate a heat engine with a finite-length Kitaev chain in an ideal Otto cycle. It is
found that the critical point of the topological phase transition coincides with the maxima of …