Role of quantum correlations in light-matter quantum heat engines

Abstract

We study a quantum Otto engine embedding a working substance composed by a two-level system interacting with a harmonic mode. The physical properties of the substance are described by a generalized quantum Rabi model arising in superconducting circuits realizations. We show that light-matter quantum correlations reduction during the hot bath stage and compression stage act as a resource for enhanced work extraction and efficiency respectively. Also, we demonstrate that the anharmonic spectrum of the working subtance has a direct impact on the transition from heat engine into refrigerator as the light-matter coupling is increased. These results shed light on the search for optimal conditions in the performance of quantum heat engines.

9 pages, 12 figures

References in corpus (21)

• Beyond the Jaynes-Cummings model: circuit QED in the ultrastrong coupling regime
• Quantum Thermodynamic Cycles and quantum heat engines
• Observation of the Bloch-Siegert Shift in a Qubit-Oscillator System in the Ultrastrong Coupling Regime
• Deep Strong Coupling Regime of the Jaynes-Cummings model
• The second law, Maxwell's daemon and work derivable from quantum heat engines
• Generalized rotating-wave approximation for arbitrarily large coupling
• Ultrastrong coupling regime of cavity QED with phase-biased flux qubits
• Tuning the Gap of a Superconducting Flux Qubit
• Selective coupling of superconducting qubits via tunable stripline cavity
• Quantum Performance of Thermal Machines over Many Cycles
• Quantum correlated heat engine with nonlinear spin-spin interactions
• Entangled quantum heat engines based on two two-spin systems with Dzyaloshinski-Moriya anisotropic antisymmetric interaction
• Quantum-to-Classical Transition in Cavity Quantum Electrodynamics
• Scalable quantum memory in the ultrastrong coupling regime
• Dynamical correlation functions and the quantum Rabi model
• Photon Statistics of Propagating Thermal Microwaves
• Creation of quantum error correcting codes in the ultrastrong coupling regime
• Ultrastrong coupling dynamics with a transmon qubit
• Gradiometric flux qubits with tunable gap
• One qubit and one photon -- the simplest polaritonic heat engine
• Quantum heat engine with continuum working medium

Cited by in corpus (5)

• Quantum thermodynamic devices: from theoretical proposals to experimental reality
• Enhancement of quantum heat engine by encircling a Liouvillian exceptional point
• Energetic and entropic effects of bath-induced coherences
• Otto Engine: Classical and Quantum Approach
• Measurement-based quantum Otto engine with a two-spin system coupled by anisotropic interaction: enhanced efficiency at finite times