We review concepts and methods associated with quantum discord and related topics. We
also describe their possible connections with other aspects of quantum information and …

Controlled quantum machines have matured significantly. A natural next step is to
increasingly grant them autonomy, freeing them from time-dependent external control. For …

An implementation of a small quantum absorption refrigerator in a circuit QED architecture is
proposed. The setup consists of three harmonic oscillators coupled to a Josephson junction …

Local master equations are a widespread tool to model open quantum systems, especially
in the context of many-body systems. These equations, however, are believed to lead to …

We design a quantum battery made up of bosons or fermions in an ultracold-atom setup,
described by Fermi-Hubbard and Bose-Hubbard models, respectively. We compare the …

We propose a three-qubit setup for the implementation of a variety of quantum thermal
machines where all heat fluxes and work production can be controlled. An important …

We explore a small quantum refrigerator consisting of three qubits, each of which is kept in
contact with an environment. We consider two settings: one is when there is necessarily …

Quantum absorption refrigerator (QAR) autonomously extracts heat from a cold bath and
dumps into a hot bath by exploiting the input heat from a higher temperature reservoir. QARs …

We propose heat machines that are nonlinear, coherent, and closed systems composed of
few field (oscillator) modes. Their thermal-state input is transformed by nonlinear Kerr …

We explore a small quantum refrigerator in which the working substance is made of
paradigmatic nearest-neighbor quantum spin models, the XYZ and the XY model with …