Monday, September 24, 2012

1209.4686 (Dmitry A. Kalashnikov et al.)

Experimental observation of double-peak structure of coincidence spectra
in ultra-fast Spontaneous Parametric Down Conversion

Dmitry A. Kalashnikov, Mikhail V. Fedorov, Leonid A. Krivitsky
The requirement on the symmetry of the biphoton wave function results in a double peak structure of the coincidence spectra of Spontaneous Parametric Down Conversion (SPDC) [1]. In this work we report the experimental observation of this effect by careful tailoring parameters of the SPDC crystal, the ultra-fast pump laser, and the measurement setup. The results are shown to be relevant to quantum state engineering of ultra-fast polarization-, or frequency-entangled mixed states.
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