Resonance fluorescence upon interference of quasi-energy atomic states caused by the dynamic Stark effect

A. V. Lyaptsev

Sumit K. Basu, T. Pramila, D. Kanjilal

Vladimir G Bordo, A A Kiselev, A. V. Liapzev

The dynamic Stark effect is considered for the case when Stark splittings exceed the hyperfine intervals. The electromagnetic field is supposed to be monochromatic and the quasi-energy approach is applied. The HFS of the quasi-energy levels is shown to be dependent on the intensity of the resonance electromagnetic field and on the detuning. The resonance fluorescence and absorption spectra of a probe field are calculated based on the density matrix method. The Ag atom is taken as an example.

Y. He, Y.-M. He, Jianglai Liu +8 more

We report the first experimental demonstration of the interference-induced spectral line elimination predicted by Zhu and Scully [Phys. Rev. Lett. 76, 388 (1996)] and Ficek and Rudolph [Phys. Rev. A 60, R4245 (1999)]. We drive an exciton transition of a self-assembled quantum dot in order to realize a two-level system exposed to a bichromatic laser field and observe the nearly complete elimination of the resonance fluorescence spectral line at the driving laser frequency. This is caused by quantum interference between coupled transitions among the doubly dressed excitonic states, without population trapping. We also demonstrate a multiphoton ac Stark effect with shifted subharmonic resonances and dynamical modifications of resonance fluorescence spectra by using double dressing.

U. Eichmann, Jonas Bergquist, J. J. Bollinger +4 more

Konstantin K. Pukhov, Sergey K. Sekatskii

Earlier an idea to use controlled with modern Scanning Probe Microscopy (SPM) technique resonant interaction of dipoles (fluorescent rare earth (RE) ions in crystals) was put forward. Here we discuss the possibility to exploit nanolocal Stark effect, caused in such systems by strong inhomogeneous electric fields of sharp SPM electrodes (tips), to engineer the dark - bright states of resonantly interacting dipoles: their energies and decay (decoherence) rates can be strongly influenced by such fields.