  In the context of fast developing quantum technologies, locating single
quantum objects embedded in solid or fluid environment while keeping their
properties unchanged is a crucial requirement as well as a challenge. Such
"quantum microscopes" have been demonstrated already for NV-centers embedded in
diamond [1], and for single atoms within an ultracold gas [2]. In this work, we
demonstrate a new method to determine non-destructively the position of
randomly distributed semiconductor quantum dots (QDs) deeply embedded in a
solid photonic waveguide. By setting the wire in an oscillating motion, we
generate large stress gradients across the QDs plane. We then exploit the fact
that the QDs emission frequency is highly sensitive to the local material
stress [3-5] to infer their positions with an accuracy ranging from +/- 35 nm
down to +/-1 nm for close-to-axis QDs.
