Título
The quantum Rabi model for two qubits
Autor
BLAS MANUEL RODRIGUEZ LARA
Nivel de Acceso
Acceso Abierto
Materias
Resumen o descripción
We study a system composed of two nonidentical qubits coupled to a single mode quantum field. We calculate the spectra of the system in the deepstrong-coupling regime via perturbation theory up to second order corrections, and show that it converges to two forced oscillator chains for cases well into that regime. Our predictions are confirmed by numerical calculation of the spectra using a parity decomposition of the corresponding Hilbert space. The numerical results point to two interesting behaviors in the ultra-strong-coupling regime: the rotating wave approximation is valid for some particular cases and there exist crossings in the spectra within each parity subspace. We also present the normal modes of the system and give an example of the time evolution of the mean photon number, population inversion, von Neuman entropy and Wootters concurrence in the ultra-strong- and deep-strongcoupling regimes.
Editor
Journal of Physics A: Mathematical and Theoretical
Fecha de publicación
29 de julio de 2013
Tipo de publicación
Artículo
Versión de la publicación
Versión aceptada
Recurso de información
Formato
application/pdf
Idioma
Inglés
Audiencia
Estudiantes
Investigadores
Público en general
Sugerencia de citación
Chilingaryan, S. A., and Rodríguez-Lara, B. M., (2013). The quantum Rabi model for two qubits, Journal of Physics A: Mathematical and Theoretical, Vol. 46(33):1-14
Repositorio Orígen
Repositorio Institucional del INAOE
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