Maximum Power of Coupled-Qubit Otto Engines
arXiv:2305.08440 · doi:10.1103/PhysRevResearch.6.023172
Abstract
We put forward four schemes of coupled-qubit quantum Otto machine, a generalization of the single-qubit quantum Otto machine, based on work and heat transfer between an internal system consisting of a coupled pair of qubits and an external environment consisting of two heat baths and two work storages. The four schemes of our model are defined by the positions of attaching the heat baths, which play a key role in the power of the coupled-qubit engine. Firstly, for the single-qubit heat engine, we find a maximum-power relation, and the fact that its efficiency at the maximum power is equal to the Otto efficiency, which is greater than the Curzon-Ahlborn efficiency. Second, we compare the coupled-qubit engines to the single-qubit one from the point of view of achieving the maximum power based on the same energy-level change for work production, and find that the coupling between the two qubits can lead to greater powers but the system efficiency at the maximum power is lower than the single-qubit system's efficiency and the Curzon-Ahlborn efficiency.
arXiv comment21 pages, 22 figures
References in corpus (67)
- QuTiP 2: A Python framework for the dynamics of open quantum systems
- QuTiP: An open-source Python framework for the dynamics of open quantum systems
- Quantum Thermodynamic Cycles and quantum heat engines
- Universal trade-off between power, efficiency, and constancy in steady-state heat engines
- The second law, Maxwell's daemon and work derivable from quantum heat engines
- The power of a critical heat engine
- Universal trade-off relation between power and efficiency for heat engines
- Performance of discrete heat engines and heat pumps in finite time
- Numerical Renormalization Group for Bosonic Systems and Application to the Subohmic Spin-Boson Model
- Markovian master equations for quantum thermal machines: local vs global approach
- Quantum mechanical Carnot engine
- Thermodynamic Bounds on Efficiency for Systems with Broken Time-reversal Symmetry
- Testing the validity of the local and global GKLS master equations on an exactly solvable model
- Strong bounds on Onsager coefficients and efficiency for three terminal thermoelectric transport in a magnetic field
- Cycling tames power fluctuations near optimum efficiency
- A Coupled Quantum Otto Cycle
- Multidimensional thermodynamic uncertainty relations
- Equilibrium and non-equilibrium dynamics of the sub-ohmic spin-boson model
- Characteristics of the Limit Cycle of a Reciprocating Quantum Heat Engine
- Optimal cycles for low-dissipation heat engines
- Universal Coherence-Induced Power Losses of Quantum Heat Engines in Linear Response
- Quantum correlated heat engine with nonlinear spin-spin interactions
- Chiral thermoelectrics with quantum Hall edge states
- Inattainability of Carnot efficiency in the Brownian heat engine
- Entropic bounds on currents in Langevin systems
- Heat-machine control by quantum-state preparation: from quantum engines to refrigerators
- A generalization of the thermodynamic uncertainty relation to periodically driven systems
- Universal constraint for efficiency and power of a low-dissipation heat engine
- Efficiency of three-terminal thermoelectric transport under broken-time reversal symmetry
- Spin Quantum Heat Engine Quantified by Quantum Steering
- Superconducting-like heat current: Effective cancellation of current-dissipation trade off by quantum coherence
- A quantum heat engine with coupled superconducting resonators
- Thermodynamic consistency of the optomechanical master equation
- Quantum Optical Two-Atom Thermal Diode
- Quantum-Enhanced Heat Engine Based on Superabsorption
- Carnot efficiency at divergent power output
- Efficiency bounds on thermoelectric transport in magnetic fields: The role of inelastic processes
- Stroboscopic two-stroke quantum heat engines
- Experimental investigation of a quantum heat engine powered by generalized measurements
- Measurement-based Formulation of Quantum Heat Engine
- Optimal power and efficiency of single quantum dot heat engines: theory and experiment
- Performance bounds of non-adiabatic quantum harmonic Otto engine and refrigerator under a squeezed thermal reservoir
- Quantum Nernst engines
- Carnot efficiency is reachable in an irreversible process
- Maxwell's lesser demon: a quantum engine driven by pointer measurements
- Steering heat engines: a truly quantum Maxwell demon
- Diverging, but negligible power at Carnot efficiency: theory and experiment
- Two Coupled Double Quantum Dots Systems as an working substance for Heat Machines
- A Classical Nernst Engine
- Non-Markovian effect on quantum Otto engine: -Role of system--reservoir interaction-
- Temperature dependent maximization of work and efficiency in a degeneracy assisted quantum Stirling heat engine
- Two-body quantum absorption refrigerators with optomechanical-like interactions
- Quantum Heat Engines with Carnot Efficiency at Maximum Power
- Power maximization of two-stroke quantum thermal machines
- Minimal two-body quantum absorption refrigerator
- Entanglement and quantum discord in optically coupled coherent Ising machines
- Entangled quantum Unruh Otto engine is more efficient
- Switching the function of the quantum Otto cycle in non-Markovian dynamics: heat engine, heater and heat pump
- Extracting work from random collisions: A model of a quantum heat engine
- Magic angle twisted bilayer graphene as a highly efficient quantum Otto engine
- Validity of Born-Markov master equations for single and two-qubit systems
- Exactly solvable two-terminal heat engine with asymmetric Onsager coefficients: Origin of the power-efficiency bound
- Stationary engines in and beyond the linear response regime at the Carnot efficiency
- Achieving Carnot efficiency in a finite-power Brownian Carnot cycle with arbitrary temperature difference
- Entanglement generation in quantum thermal machines
- Maximally effcient quantum thermal machines fuelled by nonequilibrium steady states
- Compatibility of Carnot efficiency with finite power in an underdamped Brownian Carnot cycle in small temperature-difference regime