Year: 2025
Type: article
Abstract: The optical clock states of alkaline earth and alkaline earthlike atoms are the fundament of state-of-theart optical atomic clocks.An important prerequisite for the operation of optical clocks is the magic trapping conditions where electronic and motional dynamics decouple.Here, we identify and experimentally demonstrate simultaneous magic trapping for two clock transitions in 88 Sr, realizing so-called triple-magic conditions at a specially chosen magic angle.Under these conditions, we operate an all-optical qutrit comprising the ground state 1 S 0 , and the two metastable clock states 3 P 0 and 3 P 2 .We demonstrate fast optical control in an atom array using two-and three-photon couplings to realize high-fidelity manipulation between all qutrit states.At the magic angle, we probe the coherence achievable in magic-angle-tuned traps and find atom-atom coherence times between the metastable states as long as 715(30) ms.Our work opens several new directions, including qutrit-based quantum metrology on optical transitions and high-fidelity and high-coherence manipulation on the 88 Sr fine-structure qubit.
Source: MPG.PuRe (Max Planck Society)
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7165505785