PT Journal
AU Ulhaq, A
   Weiler, S
   Ulrich, SM
   Roßbach, R
   Jetter, M
   Michler, P
TI Cascaded single-photon emission from the Mollow triplet sidebands of a quantum dot
SO Nature Photonics
JI Nat. Photon.
PY 2012
BP 238
EP 242
VL 6
IS 4
DE fromIPMRAS
AB Emission from a resonantly excited quantum emitter is a fascinating research topic within the field of quantum optics and is a useful source for different types of quantum light fields. The resonance spectrum consists of a single spectral line that develops into a triplet above saturation of the quantum emitter. The three closely spaced photon channels from the resonance fluorescence have different photon statistical signatures. We present a detailed photon statistics analysis of the resonance fluorescence emission triplet from a solid-state-based artificial atom, that is, a semiconductor quantum dot. The photon correlation measurements demonstrate both `single' and `cascaded' photon emission from the Mollow triplet sidebands. The bright and narrow sideband emission (5.9 × 106 photons per second into the first lens) can be conveniently frequency-tuned by laser detuning over 15 times its linewidth (Δv ~ 1.0 GHz). These unique properties make the Mollow triplet sideband emission a valuable light source for quantum light spectroscopy and quantum information applications, for example.
ER