Dynamics of a qubit-oscillator system with periodically varying coupling
Abstract
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 photon is explicitly treated. The time-dependent Schrödinger equation describing the system’s dynamics is solved within the Floquet formalism and compared to a solution obtained with perturbative approaches in the time- and Laplace-domain. Excellent quantitative agreement is found between the analytical and numerical calculations within the Floquet approach, demonstrating the effectiveness of the technique for the study of the dynamical Lamb effect.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 16, 2020
- Source ID
- 10.1088/1361-6455/abc7fc
Entities
People
- Mirko Amico
- Roman Ya. Kezerashvili
Organizations
- United States Department of Defense