6 papers
Quantum Otto Thermal Machines Powered by Kerr Nonlinearity
Udson C. Mendes, José S. Sales, Norton G. de Almeida
We study the effect of Kerr nonlinearity in quantum thermal machines having a Kerr-nonlinear oscillator as working substance and operating under the ideal quantum Otto cycle. We fi…
Topological Josephson Bifurcation Amplifier: Semiclassical theory
Samuel Boutin, Pedro L. S. Lopes, Anqi Mu +2
Amplifiers based on Josephson junctions allow for a fast and noninvasive readout of superconducting qubits. Motivated by the ongoing progress toward the realization of fault-tolera…
Microwave signatures of and fractional Josephson effects
Pedro L. S. Lopes, Samuel Boutin, Philippe Karan +2
We present a many-body exact diagonalization study of the and Josephson effects in circuit quantum electrodynamics architectures. Numerical simulation…
Coherent microwave photon mediated coupling between a semiconductor and a superconductor qubit
P. Scarlino, D. J. van Woerkom, U. C. Mendes +10
Semiconductor qubits rely on the control of charge and spin degrees of freedom of electrons or holes confined in quantum dots (QDs). They constitute a promising approach to quantum…
Parametric amplification and squeezing with an ac- and dc-voltage biased superconducting junction
Udson C. Mendes, Sébastien Jezouin, Philippe Joyez +5
We theoretically investigate a near-quantum-limited parametric amplifier based on the nonlinear dynamics of quasiparticles flowing through a superconducting-insulator-superconducti…
Electron-photon interaction in a quantum point contact coupled to a microwave resonator
Udson C. Mendes, Christophe Mora
We study a single-mode cavity weakly coupled to a voltage-biased quantum point contact. In a perturbative analysis, the lowest order predicts a thermal state for the cavity photons…