Quantum jumps in Landau-Zener transitions in the dissipative dynamics of a superconducting qubit |
| |
| Authors: | A I Gel’man and A M Satanin |
| |
| Institution: | 1.Institute of Applied Physics,Russian Academy of Sciences,Nizhni Novgorod,Russia;2.Nizhni Novgorod State University,Nizhni Novgorod,Russia |
| |
| Abstract: | The effect of noise on the populations of the levels of a qubit in individual experimental implementations has been studied
by the quantum trajectory method. A transition to the average dynamics obtained by means of multiple measurements of the state
of the qubit is analyzed. The developed method is applied to investigate the effect of noise on the interference pattern appearing
in the amplitude spectroscopy of the qubit in a strong variable field owing to Landau-Zener transitions. The effect of the
number of repeated measurements and the fluctuation of the phase of a pump pulse on the formation of the response of the qubit
to the external field has been analyzed. This makes it possible to interpret recent experiments in terms of individual implementations
and averaged dynamics. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
