Heat transport in the quantum Rabi model: Universality and ultrastrong coupling effects
arXiv:2403.06909 · doi:10.1088/2058-9565/adae2c
Abstract
Heat transport in the quantum Rabi model at weak interaction with the heat baths is controlled by the qubit-oscillator coupling. Universality of the linear conductance versus the temperature is found for , with a coupling-dependent Kondo-like temperature. At low temperature, coherent heat transfer via virtual processes yields a behavior with destructive interference in the presence of quasi-degeneracies in the spectrum. As the temperature increases, incoherent emission and absorption dominate and a maximum is reached at . In the presence of a bias on the qubit, the conductance makes a transition from a resonant to a broad, zero-bias peak regime. Parallels and differences are found compared to the spin-boson model in [K. Saito and T. Kato, Phys. Rev. Lett. \textbf{111}, 214301 (2013)], where the qubit-bath coupling instead of the internal qubit-oscillator coupling rules thermal transport.
References in corpus (20)
- Circuit Quantum Electrodynamics
- Observation of the Bloch-Siegert Shift in a Qubit-Oscillator System in the Ultrastrong Coupling Regime
- Generalized rotating-wave approximation for arbitrarily large coupling
- Colloquium: Quantum heat transport in condensed matter systems
- Otto refrigerator based on a superconducting qubit: classical and quantum performance
- Mesoscopic photon heat transistor
- Dissipative dynamics of a biased qubit coupled to a harmonic oscillator: Analytical results beyond the rotating wave approximation
- Thermal conductance in a spin-boson model: Cotunneling and low temperature properties
- Thermal rectification through a nonlinear quantum resonator
- Improved Dyson series expansion for steady-state quantum transport beyond the weak coupling limit - divergences and resolution
- Photonic heat transport in three terminal superconducting circuit
- Heat rectification through single and coupled quantum dots
- Photonic heat rectification in a coupled qubits system
- Heat transport through a superconducting artificial atom
- Detecting virtual photons in ultrastrongly coupled superconducting quantum circuits
- Quantum coherence-control of thermal energy transport: The V model as a case study
- Microwave quantum diode
- Heat transport through a two-level system embedded between two harmonic resonators
- Transmission spectra of the driven, dissipative Rabi model in the USC regime
- A unified diagrammatic approach to quantum transport in few-level junctions for bosonic and fermionic reservoirs: Application to the quantum Rabi model