Otto refrigerator based on a superconducting qubit: Classical and quantum performance
B. Karimi, J. P. Pekola
DOI 10.1103/PhysRevB.94.184503 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We analyze a quantum Otto refrigerator based on a superconducting qubit coupled to two LC resonators, each including a resistor acting as a reservoir. We find various operation regimes: nearly adiabatic (low driving frequency), ideal Otto cycle (intermediate frequency), and nonadiabatic coherent regime (high frequency). In the nearly adiabatic regime, the cooling power is quadratic in frequency, and we find a substantially enhanced coefficient of performance ε, as compared to that of an ideal Otto cycle. Quantum coherent effects lead invariably to a decrease in both cooling power and ε as compared to purely classical dynamics. In the nonadiabatic regime we observe strong coherent oscillations of the cooling power as a function of frequency. We investigate various driving wave forms: Compared to the standard sinusoidal drive, a truncated trapezoidal drive with optimized rise and dwell times yields higher cooling power and efficiency.
Similar papers
Applications of Superconductor-Normal Metal Interfaces
similarity 0.89S. A. Lemziakov et al. · 2025 · arXiv:2503.11476
Source status unknown — claims are unverified
Realizing a Circuit Analog of an Optomechanical System with Longitudinally Coupled Superconducting Resonators
similarity 0.87C. Eichler & J. R. Petta
Source status unknown — claims are unverified
Active initialization experiment of a superconducting qubit using a quantum circuit refrigerator
similarity 0.85Teruaki Yoshioka et al.
Source status unknown — claims are unverified
Universal Nonadiabatic Control of Small-Gap Superconducting Qubits
similarity 0.85Daniel L. Campbell et al.
Source status unknown — claims are unverified
Robustness of quantum gates with hybrid spin-photon qubits in superconducting resonators
similarity 0.84A. Chiesa et al.
Source status unknown — claims are unverified
Persistent Control of a Superconducting Qubit by Stroboscopic Measurement Feedback
similarity 0.84P. Campagne-Ibarcq et al.
Source status unknown — claims are unverified