Browsing by Subject "INVERSION"

Now showing items 1-4 of 4

    • Coherence-induced entanglement 
      Li, F. L.; Xiong, H.; Zubairy, M. Suhail (American Physical Society, 2005)
      We show how atomic coherence can lead to entanglement between two thermal fields at a temperature T. We first show that the passage of a three-level atom in V configuration without coherence cannot create entanglement. ...
    • Disentanglement in a two-qubit system subjected to dissipation environments RID A-4660-2010 
      Ikram, Manzoor; Li, Fu-li; Zubairy, M. Suhail (American Physical Society, 2007)
      We investigate the time evolution of entanglement of various entangled states of a two-qubit system exposed to either thermal or squeezed reservoirs. We show that, except for the vacuum reservoir, the sudden-death of ...
    • Improving engine efficiency by extracting laser energy from hot exhaust gas RID A-1272-2007 
      Rostovtsev, Y. V.; Matsko, A. B.; Nayak, N.; Zubairy, M. Suhail; Scully, Marlan O. (American Physical Society, 2003)
      We show that it is possible to improve the efficiency of a classical Otto-cycle heat engine by adding a high-Q microwave cavity and a laser system that can extract coherent laser energy from thermally excited "exhaust" ...
    • Quenching of spontaneous emission through interference of incoherent pump processes 
      Kapale, KT; Scully, Marlan O.; Zhu, S. Y.; Zubairy, M. Suhail (American Physical Society, 2003)
      We investigate the steady-state spontaneous emission of a V-type three-level atom, with the coherence between the two upper levels modified and controlled via incoherent pumping to a fourth auxiliary level. The external ...