Atom localization and center-of-mass wave-function determination via multiple simultaneous quadrature measurements
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We discuss localization and center-of-mass wave-function measurement of a quantum particle using multiple simultaneous dispersive interactions of the particle with different standing-wave fields. In particular, we consider objects with an internal structure consisting of a single ground state and several excited states. The transitions between ground and the corresponding excited states are coupled to the light fields in the dispersive limit, thus giving rise to a phase shift of the light field during the interaction. We show that multiple simultaneous measurements allow both an increase in the measurement or localization precision in a single direction and the performance of multidimensional measurements or localization. Further, we show that multiple measurements may relax the experimental requirements for each individual measurement. © 2007 The American Physical Society.
author list (cited authors)
Evers, J., Qamar, S., & Zubairy, M. S
complete list of authors
Evers, Jörg||Qamar, Shahid||Zubairy, M Suhail