Now showing items 1-15 of 15

    • Buffer-gas-induced absorption resonances in Rb vapor RID B-9041-2008 

      Mikhailov, E. E.; Novikova, I.; Rostovtsev, Y. V.; Welch, George R. (American Physical Society, 2004)
      We observe transformation of the electromagnetically induced transparency (EIT) resonance into an absorption resonance in a Lambda interaction configuration in a cell filled with Rb-87 and a buffer gas. This transformation ...
    • 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. ...
    • Coherent control of the Goos-Hanchen shift 

      Ziauddin, Qamar S.; Qamar, Sajid; Zubairy, M. Suhail (American Physical Society, 2010)
      The behavior of the Goos-Hanchen (GH) shifts in the reflected and transmitted light beam which is incident on a cavity containing an intracavity medium of three-level or four-level atoms with electromagnetically induced ...
    • Enhancement of magneto-optic effects via large atomic coherence in optically dense media RID B-9041-2008 

      Sautenkov, V. A.; Lukin, M. D.; Bednar, CJ; Novikova, I.; Mikhailov, E.; Fleischhauer, M.; Velichansky, V. L.; Welch, George R.; Scully, Marlan O. (American Physical Society, 2000)
      We utilize the generation of large atomic coherence in optically dense media to enhance the resonant nonlinear magneto-optic effect by several orders of magnitude, thereby eliminating power broadening and improving the ...
    • Manipulation of the Raman process via incoherent pump, tunable intensity, and phase control 

      Wang, Li-Gang; Qamar, Sajid; Zhu, Shi-Yao; Zubairy, M. Suhail (American Physical Society, 2008)
      We present a proposal to manipulate the Raman process via incoherent pump, tunable intensity, and phase control of the driving fields. It is found that Raman absorptive peaks can become Raman gain peaks by controlling the ...
    • Nonlinear magneto-optic polarization rotation with intense laser fields 

      Hsu, Paul S.; Patnaik, Anil K.; Welch, George R. (American Physical Society, 2008)
      We have studied the nonlinear Faraday effect with intense linear polarized light in an optically thick atomic rubidium vapor. We demonstrate that the polarization rotation rate (rotation angle per unit magnetic field, in ...
    • Nonlinear magneto-optical rotation of elliptically polarized light RID A-1272-2007 RID B-9041-2008 

      Matsko, A. B.; Novikova, I.; Zubairy, M. Suhail; Welch, George R. (American Physical Society, 2003)
      We predict theoretically and demonstrate experimentally an ellipticity-dependent nonlinear magneto-optic rotation of elliptically polarized light propagating in a medium with atomic coherence. We show that this effect ...
    • Nonlinear optics via double dark resonances 

      Yelin, S. F.; Sautenkov, V. A.; Kash, M. M.; Welch, George R.; Lukin, M. D. (American Physical Society, 2003)
      Double dark resonances originate from a coherent perturbation of a system displaying electromagnetically induced transparency. We experimentally show and theoretically confirm that this leads to the possibility of extremely ...
    • Optical imaging beyond the diffraction limit via dark states RID A-8711-2009 

      Li, Hebin; Sautenkov, Vladimir A.; Kash, Michael M.; Sokolov, Alexei V.; Welch, George R.; Rostovtsev, Yuri V.; Zubairy, M. Suhail; Scully, Marlan O. (American Physical Society, 2008)
      We study the possibility of creating spatial patterns having subwavelength size by using the so-called dark states formed by the interaction between atoms and optical fields. These optical fields have a specified spatial ...
    • Propagation dynamics of controlled cross-talk via interplay between chi((1)) and chi((3)) processes 

      Hsu, Paul S.; Welch, George R.; Gord, James R.; Patnaik, Anil K. (American Physical Society, 2011)
      We investigate theoretically and experimentally the propagation dynamics of a nonlinear cross-talk effect between two probe channels in a double-ladder system and show that an interplay between chi((1)) and chi((3)) processes ...
    • Quantum search protocol for an atomic array 

      Scully, Marlan O.; Zubairy, M. Suhail (American Physical Society, 2001)
      Quantum computers can, in principle, exceed the speed of ordinary computers by taking advantage of quantum coherence and entanglement. It is possible to find a "needle in a haystack" of N-1 straws in only rootN searches ...
    • Resonant enhancement of high-order optical nonlinearities based on atomic coherence RID A-1272-2007 

      Zubairy, M. Suhail; Matsko, A. B.; Scully, Marlan O. (American Physical Society, 2002)
      We show that the effect of coherent population trapping may result in resonant enhancement of chi((5)) or higher-order nonlinearities. The enhancement is accompanied by suppression of the other linear and nonlinear ...
    • Spectral narrowing via quantum coherence 

      Mikhailov, Eugeniy E.; Sautenkov, Vladimir A.; Rostovtsev, Yuri V.; Zhang, Aihua; Zubairy, M. Suhail; Scully, Marlan O.; Welch, George R. (American Physical Society, 2006)
      We have studied the transmission through an optically thick Rb-87 vapor that is illuminated by monochromatic and noise-broadened laser fields in Lambda configuration. The spectral width of the beat signal between the two ...
    • Subwavelength atom localization via amplitude and phase control of the absorption spectrum 

      Sahrai, M.; Tajalli, H.; Kapale, KT; Zubairy, M. Suhail. (American Physical Society, 2005)
      We propose a scheme for subwavelength localization of an atom conditioned upon the absorption of a weak probe field at a particular frequency. Manipulating atom-field interaction on a certain transition by applying drive ...
    • Vacuum squeezing in atomic media via self-rotation RID A-1272-2007 RID B-9041-2008 

      Matsko, A. B.; Novikova, I.; Welch, George R.; Budker, D.; Kimball, D. F.; Rochester, S. M. (American Physical Society, 2002)
      When linearly polarized light propagates through a medium in which elliptically polarized light would undergo self-rotation, squeezed vacuum can appear in the orthogonal polarization. A simple relationship between self-rotation ...