Signal and noise characteristics of bi-SQUIDстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 15 января 2015 г.
Аннотация:We present an improved analytic theory, numerical simulation, and analysis of noise characteristics of a bi-SQUID in comparison with those of a dc SQUID in an open loop configuration. The analytic theory which had been developed earlier neglecting a pulse component of the difference of the phases of Josephson junctions is now completed with taking into account the pulse component. In the bi-SQUID, the additional Josephson junction introduces an additional source of fluctuations as well as changes its transfer function, nonlinear dynamics, and the noise spectrum transformation. Some increase in the reduced-to-input noise at low values of applied magnetic flux comes from the nonlinear flux to phase difference transformation introduced in bi-SQUID as a way to linearize its voltage response.