MAGNETIC FLUX SENSITIVITY OF THE POPULATION AND THE PANCHARATNAM PHASE FOR A SINGLE COOPER-PAIR BOX
2011 ◽
Vol 09
(03)
◽
pp. 883-892
◽
Keyword(s):
We study the behaviour of a single Cooper-pair box with a SQUID loop interacting with a magnetic field. We demonstrate the strong dependence of the population and the Pancharatnam phase on the magnetic flux and study the modifications when a temporal drift is present on the magnetic field. Moreover, we show that the Pancharatnam phase is more sensitive to the excitation parameters than the populations, suggesting a sensitive method for controlling the system and/or detecting flux variations.