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Light-matter decoupling and A2 term detection in superconducting circuits

AutorGarcía-Ripoll, Juan José ; Peropadre, Borja ; Liberato, S. de
Fecha de publicación3-mar-2015
EditorAmerican Physical Society
CitaciónAPS March Meeting (2015)
ResumenWe study the spontaneous emission of a qubit interacting with a one-dimensional waveguide through a realistic minimal-coupling interaction. We show that the diamagnetic term A2 leads to an effective decoupling of a single qubit from the electromagnetic field. This effect is observable at any range of qubit-photon couplings. For this we study a setup consisting of a transmon that is suspended over a transmission line. Assuming a standard model of qubit-line interaction, we prove that the relative strength of the A2 term is controlled with the qubit-line separation and show that, as a consequence, the spontaneous emission rate of the suspended transmon onto the line can increase with such separation, instead of decreasing.
DescripciónAPS March Meeting 2015, San Antonio, Texas, March 2–6, 2015
URIhttp://hdl.handle.net/10261/135490
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