Título

The quantum Rabi model for two qubits

Autor

BLAS MANUEL RODRIGUEZ LARA

Nivel de Acceso

Acceso Abierto

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

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

Descargas

223

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