Oscillatory behavior of a superradiating system coupled to electron reservoirs

Details Oscillatory behavior of a superradiating system coupled to electron reservoirs Oscillatory behavior of a superradiating system coupled to electron reservoirs

1998-03-11

arxiv.org/abs/cond-mat/9803133v1

Phys. Rev. Lett. 80, 3952 (1998)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages revtex (twocolumns), 2 figures (eps). To appear in PRL

Scientific paper

10.1103/PhysRevLett.80.3952

We investigate a superradiating system coupled to external reservoirs. Under conditions where electrons tunneling at a rate $T$ act like an electron pump, we predict a novel phenomenon in the form of oscillations with a frequency $\omega \simeq \sqrt{2\Gamma T}$ that appear in the (photon) emission intensity, where $\Gamma $ is the spontaneous decay rate of a single two-level system. The effect, together with a strong enhancement of the superradiant peak, should be observable in semiconductor quantum wells in strong magnetic fields, or in quantum dot arrays.

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