Pseudoresonance mechanism of all-optical frequency-standard operation (6 pages)

Peter W. Milonni

Arnaud Witomski

Georgy A. Kazakov, Boris G. Matisov, I. E. Mazets +2 more

We propose an approach to all-optical frequency standard design, based on a counterintuitive combination of the coherent population trapping effect and signal discrimination at the maximum of absorption for the probe radiation. The short-term stability of such a standard can achieve the level of ${10}^{\ensuremath{-}14}∕\sqrt{\ensuremath{\tau}}$. The physics beyond this approach is a dark resonance splitting caused by the interaction of the nuclear magnetic moment with the external magnetic field.

Andrew G. White

Sergei A. Zibrov, Vladimir L Velichansky, Alexander S. Zibrov +2 more

The measurements of the metrological characteristics (amplitude, width, and shift in the magnetic field) of the dark pseudoresonance, which was proposed by Kazakov et al. [quant-ph/0506167] as the reference resonance for an atomic frequency standard, are reported. It has been shown that the characteristics of the pseudoresonance are worse than those of the unsplit electromagnetically induced transparency resonance for the excitation scheme with the lin||lin polarization on the D1 line of the 87Rb atom.

Yu A Il'inskiĭ, Vera M. Petnikova