Главная страница
russian   english
16+
<< back

Title of Article

DYNAMIC CONTROL OF QUANTUM STATES OF JOSEPHSON QUBITS


Issue
5
Date
2010

Article type
scientific article
UDC
538.94
Pages
48-53
Keywords
qubits, dynamic control, Landau-Zener transitions, quasienergy, amplitude spectroscopy


Authors
Gelman Aleksandr Iosifovich
Institut prikladnoy fiziki RAN, Nizhniy Novgorod

Denisenko Marina Valerevna
Nizhegorodskiy gosuniversitet im. N.I. Lobachevskogo

Satanin Arkadiy Mikhaylovich
Nizhegorodskiy gosuniversitet im. N.I. Lobachevskogo


Abstract
Dynamic behavior of a qubit in a strong variable electromagnetic field has been studied. It has been shown, that a biharmonic signal can substantially affect the rate of Landau-Zener transitions, the intersection of quasienergy levels and the nature of multiphoton transitions. It has been found that the interference pattern for populations of excited states of the qubit is sensitive to the parameters of the signal. These effects can be used for calibration of picosecond pulses.

File (in Russian)