Unexpectedly allowed transition in two inductively coupled transmons
Mesoscale and Nanoscale Physics
2017-01-20 v1 Quantum Physics
Abstract
We present experimental results in which the unexpected zero-two transition of a circuit composed of two inductively coupled transmons is observed. This transition shows an unusual magnetic flux dependence with a clear disappearance at zero magnetic flux. In a transmon qubit the symmetry of the wave functions prevents this transition to occur due to selection rule. In our circuit the Josephson effect introduces strong couplings between the two normal modes of the artificial atom. This leads to a coherent superposition of states from the two modes enabling such transitions to occur.
Keywords
Cite
@article{arxiv.1601.05263,
title = {Unexpectedly allowed transition in two inductively coupled transmons},
author = {Étienne Dumur and Bruno Küng and Alexey Feofanov and Thomas Weißl and Yuriy Krupko and Nicolas Roch and Cécile Naud and Wiebke Guichard and Olivier Buisson},
journal= {arXiv preprint arXiv:1601.05263},
year = {2017}
}