Heidelberg 2015 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 58: Quantum Effects: Cavity QED II
Q 58.1: Talk
Thursday, March 26, 2015, 14:30–14:45, B/gHS
Spontaneous emission inhibition via transition frequency modulation — •Mihai Macovei1,2 and Christoph H. Keitel1 — 1Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, D-69117 Heidelberg, Germany — 2Institute of Applied Physics, Academiei str.5, MD-2028 Chisinau, Moldova
Excited atoms decay spontaneously because of their interaction with the environmental vacuum electromagnetic field modes. Independent atoms exhibit an exponential decaying law for instance. There is a number of techniques which enables us to modify or control this emission. Here, we demonstrate how spontaneous emission can be inhibited via frequency modulation of emitter's transition frequency [1]. Particularly, the frequency of modulation is selected to be of the order of the bare-state spontaneous decay rate. We found that the spontaneous emission suppression is due to quantum interferences among multiple induced decay channels.
[1] M. Macovei, and C. H. Keitel, Phys. Rev. A 90, 043838 (2014).