We propose a scheme for localizing an atom in a four-level configuration inside a classical standing wave field, conditioned upon the measurement of frequency of a weak probe field. In the classical standing wave field, the interaction between the atom and the field is position dependent due to the Rabi-frequency of the driving field. Hence, as the absorption frequency of the probe field is mea...

A bstract We propose a closed-form formula for genus 0 four-point functions in AdS 3 string theory with pure NS-NS flux including arbitrary amounts of spectral flow. Our passes many non-trivial consistency checks and has intriguing connections to Hurwitz theory. This paper is the second series several instalments.