https://doi.org/10.1140/epjb/e2003-00221-5
Electromagnetically induced tunnelling suppression in a flux qubit
INFM, MIUR and Department of Physical and Astronomical
Sciences, University of Palermo, Via Archirafi 36, 90123
Palermo, Italy
Corresponding author: a messina@fisica.unipa.it
Received:
21
May
2003
Published online:
11
August
2003
Motivated by recent experiments wherein Josephson devices are irradiated by microwaves fields or are coupled to LC resonators, we theoretically investigate the dynamics of a flux qubit coupled to a monochromatic bosonic mode. We define strong coupling conditions under which the qubit tunnelling frequency between the localized flux states can be controlled and even suppressed. The practical realization of such a regime leading to this hindered dynamics is discussed.
PACS: 03.67-a – Quantum information / 03.67.Lx – Quantum computing / 85.25.Dq – Superconducting quantum interference devices (SQUIDs)
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2003
