Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
The manipulation of massive ro-vibronic superpositions using timefrequency-resolved coherent anti-Stokes Raman
 

Summary: The manipulation of massive ro-vibronic superpositions using
time±frequency-resolved coherent anti-Stokes Raman
scattering (TFRCARS): from quantum control to
quantum computing
R. Zadoyan, D. Kohen 1
, D.A. Lidar 2
, V.A. Apkarian *
Department of Chemistry, University of California, Irvine, CA 92697-2025, USA
Received 18 January 2001
Abstract
Molecular ro-vibronic coherences, joint energy-time distributions of quantum amplitudes, are selectively prepared,
manipulated, and imaged in time±frequency-resolved coherent anti-Stokes Raman scattering (TFRCARS) measure-
ments using femtosecond laser pulses. The studies are implemented in iodine vapor, with its thermally occupied sta-
tistical ro-vibrational density serving as initial state. The evolution of the massive ro-vibronic superpositions, consisting
of 103
eigenstates, is followed through two-dimensional images. The ®rst- and second-order coherences are captured
using time-integrated frequency-resolved CARS, while the third-order coherence is captured using time-gated fre-
quency-resolved CARS. The Fourier ®ltering provided by time-integrated detection projects out single ro-vibronic
transitions, while time-gated detection allows the projection of arbitrary ro-vibronic superpositions from the coherent
third-order polarization. A detailed analysis of the data is provided to highlight the salient features of this four-wave

  

Source: Apkarian, V. Ara - Department of Chemistry, University of California, Irvine
Lidar, Daniel - Center for Quantum Information Science and Technology & Department of Electrical Engineering, University of Southern California

 

Collections: Chemistry; Computer Technologies and Information Sciences; Physics