Terahertz frequency standard based on three-photon coherent population trapping

Abstract

A scheme for a THz frequency standard based on three-photon coherent population trapping in stored ions is proposed. Assuming the propagation directions of the three lasers obey the phase matching condition, we show that stability of few 10${}^{-14}$ at one second can be reached with a precision limited by power broadening to $10^{-11}$ in the less favorable case. The referenced THz signal can be propagated over long distances, the useful information being carried by the relative frequency of the three optical photons.

article soumis a PRL le 21 mars 2007, accepte le 10 mai, version 2 (24/05/2007)

References in corpus (7)

• ${}^{87}$Sr lattice clock with inaccuracy below 10${}^{-15}$
• Optical clocks based on ultra-narrow three-photon resonances in alkaline earth atoms
• A high-accuracy optical clock via three-level coherence in neutral bosonic ${}^{88}$Sr
• Evaluation of the ultimate performances of a Ca+ single-ion frequency standard
• Quadrupole moments and hyperfine constants of metastable states of Ca${}^{+}$, Sr${}^{+}$, Ba${}^{+}$, Yb${}^{+}$, Hg${}^{+}$, and Au
• Dynamic cancellation of ac Stark shift for pulsed EIT/Raman optical lattice clocks
• Quantum coherence and population trapping in three-photon processes

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• Bessel beams of two-level atoms driven by a linearly polarized laser field
• Phase transfer between three visible lasers for coherent population trapping
• Experimental Demonstration of a Terahertz Frequency Reference based on Coherent Population Trapping
• Doppler-free three-photon coherence effects in mercury vapor
• Noise characterization of an Optical Frequency Comb using Offline Cross-Correlation
• Investigating the $4D_{3/2}|3,\pm 2⟩$--$4D_{5/2}|3,\pm 2⟩$ transition in Nb${}^{4+}$ for a THz atomic clock
• Coherent internal state transfer by three-photon STIRAP-like scheme for many-atom samples