22 citations · 89 across the 8 of their papers we have counts for
8 papers · 1 filter
Which Otto Engine Is the Fastest?
Idriss Hank Nkouatchoua Ngueya, Marcin Łobejko
A general thermal machine is characterized by distinct time or energy scales: temperature, coupling to the heat baths, internal free dynamics and interactions, and external driving…
Dynamics of the Non-equilibrium spin Boson Model: A Benchmark of master equations and their validity
Gerardo Suárez, Marcin Łobejko, Michał Horodecki
In recent years, there has been tremendous focus on identifying whether effective descriptions of open quantum systems such as master equations, can accurately describe the dynamic…
Catalytic enhancement in the performance of the microscopic two-stroke heat engine
Tanmoy Biswas, Marcin Łobejko, Paweł Mazurek +1
We consider a model of heat engine operating in the microscopic regime: the two-stroke engine. It produces work and exchanges heat in two discrete strokes that are separated in tim…
Catalytic advantage in Otto-like two-stroke quantum engines
Marcin Łobejko, Tanmoy Biswas, Paweł Mazurek +1
We demonstrate how to incorporate a catalyst to enhance the performance of a heat engine. Specifically, we analyze efficiency in one of the simplest engines models, which operates…
The Josephson junction as a quantum engine
Robert Alicki, Michał Horodecki, Alejandro Jenkins +2
We treat the Cooper pairs in the superconducting electrodes of a Josephson junction (JJ) as an open system, coupled via Andreev scattering to external baths of electrons. The diseq…
Corrections to the Hamiltonian induced by finite-strength coupling to the environment
Marcin Łobejko, Marek Winczewski, Gerardo Suárez +2
If a quantum system interacts with the environment, then the Hamiltonian acquires a correction known as the Lamb-shift term. There are two other corrections to the Hamiltonian, rel…
The tight Second Law inequality for coherent quantum systems and finite-size heat baths
Marcin Łobejko
We propose a new form of the Second Law inequality that defines a tight bound for extractable work from the non-equilibrium quantum state. In classical thermodynamics, the optimal…
Work distributions for random sudden quantum quenches
Marcin Łobejko, Jerzy Łuczka, Peter Talkner
The statistics of work performed on a system by a sudden random quench is investigated. Considering systems with finite dimensional Hilbert spaces we model a sudden random quench b…