Friday, March 1, 2013

1302.7224 (Andrea Cadarso et al.)

Phase stabilization of a frequency comb using multi-pulse quantum
interferometry
   [PDF]

Andrea Cadarso, Jordi Mur-Petit, Juan José García-Ripoll
From the interaction between a frequency comb and an atomic qubit, we derive quantum protocols for the determination of the carrier-envelope offset phase, using the qubit coherence as a reference, and without the need of frequency doubling or an octave spanning comb. Compared with a trivial interference protocol, the multi-pulse protocol results in a polynomial enhancement of the sensitivity O(N^{-2}) with the number N of laser pulses involved. We present specializations of the protocols using optical or hyperfine qubits, Lambda-schemes and Raman transitions, and introduce methods where the reference is another phase-stable cw-laser or frequency comb.
View original: http://arxiv.org/abs/1302.7224

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