Physics – Quantum Physics
Scientific paper
2011-07-11
Phys. Rev A. 84, 061805(R) (2011)
Physics
Quantum Physics
5 pages, 4 figures
Scientific paper
10.1103/PhysRevA.84.061805
Transitions between quantum states by photon absorption or emission are intimately related to symmetries of the system which lead to selection rules and the formation of dark states. In a circuit quantum electrodynamics setup, in which two resonant superconducting qubits are coupled through an on-chip cavity and driven via the common cavity field, one single-excitation state remains dark. Here, we demonstrate that this dark state can be excited using local phase control of individual qubit drives to change the symmetry of the driving field. We observe that the dark state decay via spontaneous emission into the cavity is suppressed, a characteristic signature of subradiance. This local control technique could be used to prepare and study highly correlated quantum states of cavity-coupled qubits.
Baur Matthias
Filipp Stefan
Steffen Lars
van Loo Arjan F.
Wallraff Andreas
No associations
LandOfFree
Preparation of Subradiant States using Local Qubit Control in Circuit QED does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Preparation of Subradiant States using Local Qubit Control in Circuit QED, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of Subradiant States using Local Qubit Control in Circuit QED will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-138183