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Título: | Dynamics of superconducting qubits in open transmission lines |
Autor: | García-Ripoll, Juan José CSIC ORCID ; Zueco, David CSIC ORCID; Porras, Diego CSIC ORCID; Peropadre, Borja CSIC ORCID | Fecha de publicación: | 3-mar-2014 | Editor: | American Physical Society | Citación: | APS March Meeting 2014 | Resumen: | The time and space resolved dynamics of a superconducting qubit with an Ohmic coupling to propagating 1D photons is studied, from weak coupling to the ultrastrong coupling regime (USC). A nonperturbative study based on Matrix Product States (MPS) shows the following results: (i) The ground state of the combined systems contains excitations of both the qubit and the surrounding bosonic field. (ii) An initially excited qubit equilibrates through spontaneous emission to a state, which under certain conditions, is locally close to that ground state, both in the qubit and the field. (iii) The resonances of the combined qubit-photon system match those of the spontaneous emission process and also the predictions of the adiabatic renormalisation. These results set the foundations for future studies and engineering of the interactions between superconducting qubits and propagating photons, as well as the design of photon-photon interactions based on artificial materials built from these qubits. | Descripción: | Resumen del trabajo presentado al "APS March Meeting" celebrado en Denver, Colorado (US) del 3 al 7 de marzo de 2014. | Versión del editor: | http://meetings.aps.org/Meeting/MAR14/Session/A34.6 | URI: | http://hdl.handle.net/10261/114447 |
Aparece en las colecciones: | (ICMA) Comunicaciones congresos (CFMAC-IFF) Comunicaciones congresos |
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