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Hybrid qubit-resonator systems: From strong to ultrastrong coupling, from equilibrium to non equilibrium phases

AutorZueco, David; Hümmer, Thomas; Jenkins, Mark; Martínez Pérez, M. J.; Reuther, Georg M.; García-Ripoll, Juan José ; Luis, Fernando; Hänggi, Peter
Fecha de publicación2012
CitaciónAPS March Meeting 2012
ResumenHybrid systems: spin ensembles coupled to superconducting circuits have received a lot of attention recently. In a seminal experiment it has been demonstrated strong coupling between a NV-center spins ensemble and a flux qubit. The ensemble maps to a bosonic mode, thus this setup is a realization of a qubit-resonator model. In this talk we propose molecular magnets, instead of NV centers, as ensembles and we show that with them it is possible to reach the ultra strong coupling (the coupling is around 40% of the qubit-resonator frequencies). Finally, we emphasize the potentiality of these architectures for exploring many body physics by building arrays made of flux qubits and crystal spins. We will discuss non equilibrium signatures of Mott insulator - Superfluid phases and its feasibility within current technology.
DescripciónResumen del trabajo presentado al American Physical Society March Meeting celebrado en Boston (US) del 27 de febrero al 2 de marzo de 2012.
Versión del editorhttp://meetings.aps.org/link/BAPS.2012.MAR.A29.9
URIhttp://hdl.handle.net/10261/121782
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