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Dynamics of a Qubit-oscillator System with Periodically Varying Coupling by Amico, Mirko; Kezerashvili, Roman Ya. is a scholarly article available to read on EtoBox.

What is Dynamics of a Qubit-oscillator System with Periodically Varying Coupling about?

The dynamics of qubits coupled to a harmonic oscillator with time-periodic coupling is investigated in the framework of Floquet theory. This system can be used to model nonadiabatic phenomena that require a periodic modulation of the qubit/oscillator coupling. The case of a single qubit coupled to a resonator populated with $n= 0,1$ photons is explicitly treated. The time-dependent Schr\"{o}dinger equation describing the system's dynamics is solved within the Floquet formalism and a perturbative approach in the time- and Laplace-domain. Good quantitative agreement is found between the analytical and numerical calculations within the Floquet approach, making it the most promising candidate for the study of time-periodic problems. Nonetheless, the time- or Laplace-domain perturbative approaches can be used in the presence of aperiodic time-dependent terms in the Hamiltonian.

Author

Amico, Mirko; Kezerashvili, Roman Ya.

Published

2019

Language

EN