Dressed relaxation and dephasing in a strongly driven two-level system
Artikel i vetenskaplig tidskrift, 2010

We study relaxation and dephasing in a strongly driven two-level system interacting with its environment. We develop a theory which gives a straightforward physical picture of the complex dynamics of the system in terms of dressed states. In addition to the dressing of the energy diagram, we describe the dressing of relaxation and dephasing. We find a good quantitative agreement between the theoretical calculations and measurements of a superconducting qubit driven by an intense microwave field. The competition of various processes leads to a rich structure in the observed behavior, including signatures of population inversion.

Resonance

Dynamics

Superconducting Qubit

Författare

Christopher Wilson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Göran Johansson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Tim Duty

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Fredrik Persson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Martin Sandberg

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Per Delsing

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Physical Review B - Condensed Matter and Materials Physics

1098-0121 (ISSN)

Vol. 81 2 Art. no. 024520- 024520

Ämneskategorier

Den kondenserade materiens fysik

DOI

10.1103/PhysRevB.81.024520