Micromagic Clock: Microwave Clock Based on Atoms in an Engineered Optical Lattice

2008/08/20 by K. Beloy, Andrei Derevianko, A. Derevianko +2 · 4 citations
Physics and Astronomy · #Advanced Frequency and Time Standards #Cold Atom Physics and Bose-Einstein Condensates #Quantum optics and atomic interactions #physics.atom-ph

paper · pdf · doi:10.1103/physrevlett.102.120801

published as Phys.Rev.Lett.102:120801,2009 · 4pgs+3figs

arxiv created 2008/08/20 · openalex publication_date 2009/03/26 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We propose a new class of atomic microwave clocks based on the hyperfine transitions in the ground state of aluminum or gallium atoms trapped in optical lattices. For such elements magic wavelengths exist at which both levels of the hyperfine doublet are shifted at the same rate by the lattice laser field, cancelling its effect on the clock transition. A similar mechanism for the magic wavelengths may work in microwave hyperfine transitions in other atoms which have the fine-structure multiplets in the ground state.

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• Entangling the lattice clock: Towards Heisenberg-limited timekeeping
• Possibility of magic trapping of a three-level system for Rydberg blockade implementation
• Magic Frequencies for Cesium Primary-Frequency Standard
• Magic wavelengths for terahertz clock transitions

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