Coherent laser control in attosecond sum-frequency polarization beats using twin noisy driving fields

Details Coherent laser control in attosecond sum-frequency polarization beats using twin noisy driving fields Coherent laser control in attosecond sum-frequency polarization beats using twin noisy driving fields

Feb 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005phrva..71b3802z&link_type=abstract

Physical Review A, vol. 71, Issue 2, id. 023802

Physics

7

Quantum Fluctuations, Quantum Noise, And Quantum Jumps, Coherent Control Of Atomic Interactions With Photons

Scientific paper

Based on the phase-conjugate polarization interference between two-pathway excitations, we obtained an analytic closed form for the second-order or fourth-order Markovian stochastic correlation of the V three-level sum-frequency polarization beat (SFPB) in attosecond scale. Novel interferometric oscillatory behavior is exposed in terms of radiation-radiation, radiation-matter, and matter-matter polarization beats. The phase-coherent control of the light beams in the SFPB is subtle. When the laser has broadband linewidth, the homodyne detected SFPB signal shows resonant-nonresonant cross correlation, a drastic difference for three Markovian stochastic fields, and the autocorrelation of the SFPB exhibits hybrid radiation-matter detuning terahertz damping oscillation. As an attosecond ultrafast modulation process, it can be extended intrinsically to any sum frequency of energy levels. It has been also found that the asymmetric behaviors of the polarization beat signals due to the unbalanced controllable dispersion effects between the two arms of interferometer do not affect the overall accuracy in case using the SFPB to measure the Doppler-free energy-level sum of two excited states.

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