Quantum chaos in an ultrastrongly coupled bosonic junction

Naether, U. ; García-Ripoll, J.J. ; Mazo, J.J. (Universidad de Zaragoza) ; Zueco, D. (Universidad de Zaragoza)

Resumen: The semiclassical and quantum dynamics of two ultrastrongly coupled nonlinear resonators cannot be explained using the discrete nonlinear Schrödinger equation or the Bose-Hubbard model, respectively. Instead, a model beyond the rotating wave approximation must be studied. In the semiclassical limit this model is not integrable and becomes chaotic for a finite window of parameters. For the quantum dimer we find corresponding regions of stability and chaos. The more striking consequence for both semiclassical and quantum chaos is that the tunneling time between the sites becomes unpredictable. These results, including the transition to chaos, can be tested in experiments with superconducting microwave resonators.

Idioma: Inglés

DOI: 10.1103/PhysRevLett.112.074101

Año: 2014

Publicado en: PHYSICAL REVIEW LETTERS 112, 7 (2014), 074101 [5 pp]
ISSN: 0031-9007

Factor impacto JCR: 7.512 (2014)

Categ. JCR: PHYSICS, MULTIDISCIPLINARY rank: 6 / 78 = 0.077 (2014) - Q1 - T1

Financiación: info:eu-repo/grantAgreement/ES/CAM/QUITEMAD-S2009-ESP-1594
Financiación: info:eu-repo/grantAgreement/ES/DGA/FENOL-GROUP
Financiación: info:eu-repo/grantAgreement/ES/MINECO/FIS2011-25167
Financiación: info:eu-repo/grantAgreement/ES/MINECO/FIS2012-33022

Tipo y forma: Article (Published version)

Área (Departamento): Física de la Materia Condensada (Departamento de Física de la Materia Condensada)