Coherent control in a semiconductor optical amplifier operating at room   temperature
  We demonstrate the Ramsey analogous experiment known as coherent control, taking place along an electrically-driven semiconductor optical amplifier operating at room temperature. 
Amir Capua, Ouri Karni, Gadi Eisenstein, Vitalii Sichkovskyi, Vitalii   Ivanov, Johann Peter Reithmaier
physics.optics quant-ph