Qurrat-ul-Ain Gulfam and Jörg Evers 2010 J. Phys. B: At. Mol. Opt. Phys. 43 045501 doi:10.1088/0953-4075/43/4/045501
Qurrat-ul-Ain Gulfam and Jörg Evers
Show affiliationsAccurate measurement of relative distance and orientation of two nearby quantum particles is discussed. We are in particular interested in a realistic description requiring as little prior knowledge about the system as possible. Thus, unlike in previous studies, we consider the case of an arbitrary relative orientation of the two atoms. For this, we model the atom with complete Zeeman manifolds, and include parallel as well as orthogonal dipole–dipole couplings between all states of the two atoms. We find that it is possible to determine the distance of the two atoms independent of the orientation, as long as the particles are sufficiently close to each other. Next, we discuss how in addition the alignment of the atoms can be measured. For this, we focus on the two cases of atoms in a two-dimensional waveguide and of atoms on a surface.
32.50.+d Fluorescence, phosphorescence (including quenching)
Issue 4 (28 February 2010)
Received 30 September 2009, in final form 25 November 2009
Published 29 January 2010
Qurrat-ul-Ain Gulfam and Jörg Evers 2010 J. Phys. B: At. Mol. Opt. Phys. 43 045501
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