Quantum engineering of atomic phase-shifts in optical clocks

Abstract

Quantum engineering of time-separated Raman laser pulses in three-level systems is presented to produce an ultra-narrow optical transition in bosonic alkali-earth clocks free from light shifts and with a significantly reduced sensitivity to laser parameter fluctuations. Based on a quantum artificial complex-wave-function analytical model, and supported by a full density matrix simulation including a possible residual effect of spontaneous emission from the intermediate state, atomic phase-shifts associated to Ramsey and Hyper-Ramsey two-photon spectroscopy in optical clocks are derived. Various common-mode Raman frequency detunings are found where the frequency shifts from off-resonant states are canceled, while strongly reducing their uncertainties at the 10${}^{-18}$ level of accuracy.

accepted for publication in PRA

References in corpus (8)

• Quantum State Engineering and Precision Metrology using State-Insensitive Light Traps
• Spectroscopic observation of SU(N)-symmetric interactions in Sr orbital magnetism
• A generalized Ramsey excitation scheme with suppressed light shift
• Off-resonant Raman transitions impact in an atom interferometer
• Decoherence and Collisional Frequency Shifts of Trapped Bosons and Fermions
• Dynamic cancellation of ac Stark shift for pulsed EIT/Raman optical lattice clocks
• Spin waves and Collisional Frequency Shifts of a Trapped-Atom Clock
• S-Wave Collisional Frequency Shift of a Fermion Clock