On sensitivity limitations of a dichromatic optical detection of a classical mechanical forceстатья
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: 26 декабря 2018 г.
Аннотация:We apply the strategy of the back action evading measurement of a quadrature component of mechanical motion
of a test mass to detect a classical force acting on the mass [Science 209, 547 (1980)] and study both classical and quantum limitations of the technique. We are considering a resonant displacement transducer interrogated with a dichromatic optical pump as a model system in this study. The transducer is represented by a Fabry–Perot cavity with a totally reflecting movable end mirror that the resonant force of interest acts upon. The cavity is pumped with two coherent optical carriers equally detuned from one of the cavity resonances. We show that the quantum back action cannot be completely excluded from the measurement result due to the dynamic instability of the optomechanical system that either limits the allowable power of the optical pump or calls for introducing an asymmetry to he pump configuration, destroying the quantum nondemolition nature of the measurement.