Cadarso, AndreaMur Petit, JordiGarcía Ripoll, Juan José2023-06-192023-06-192014-02-210031-900710.1103/PhysRevLett.112.073603https://hdl.handle.net/20.500.14352/33744From 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 multipulse protocol results in a polynomial enhancement of the sensitivity O(N−2) with the number N of laser pulses involved. We specialize the protocols using optical or hyperfine qubits, Λ schemes, and Raman transitions, and introduce methods where the reference is another phase-stable cw laser or frequency comb.engjournal articlehttp://journals.aps.org/prl/abstract/10.1103/PhysRevLett.112.073603#abstractopen access530.145Teoría de los quanta2210.23 Teoría Cuántica