Frankfurt 2006 – scientific programme
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Q: Quantenoptik und Photonik
Q 10: Quanteneffekte I
Q 10.3: Talk
Monday, March 13, 2006, 14:30–14:45, HII
Measurement of the separation between atoms beyond diffraction limit — •J. Evers1,2, J.-T. Chan2, M. O. Scully2,3, and M. S. Zubairy2 — 1Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg — 2Institute for Quantum Studies and Dept. of Physics, Texas A&M University, College Station, Texas 77843-4242 — 3Princeton Institute for Materials Research, Princeton University, Princeton, NJ 08544-1009
Precision measurement of small separations between two quantum objects has been of interest since the early days of science. Here, we discuss a scheme which yields spatial information on a system of two identical atoms placed in a standing wave laser field [1]. The information is extracted from the collective resonance fluorescence spectrum of the two particles, relying entirely on far-field imaging techniques. Both the interatomic separation and the positions of the two particles within the standing wave field relative to the nodes can be measured with fractional-wavelength precision over a wide range of sub-wavelength distances.
[1] J. Chang, J. Evers, M. O. Scully and M. S. Zubairy, quant-ph/0508010.