1. Rydberg atoms
  2. Research
  3. Research topics
  4. Strontium team

Strontium team

People

Permanent staff: Brice Bakkali-Hassani, Sébastien Gleyzes, Michel Brune, Jean-Michel Raimond, Serge Haroche

PhD students: Mathis Pépin, Corentin Guimard

Summary

We are currently developing a quantum simulator based on circular Rydberg states of strontium. Strontium is a two-valence-electron atom whose ionic core remains optically active when one electron is prepared in a Rydberg state. In a circular state, the large distance between the orbits of the two electrons suppresses autoionization when the ionic core is excited , enabling optical manipulation directly in the Rydberg state . We prepare individual strontium atoms in optical tweezer arrays, excite them to circular states, and trap them in the same tweezers as the ground-state atoms, using the polarizability of the ionic core . The experiment operates in a 4 K cryogenic environment, which protects the circular states from microwave blackbody radiation. We have measured a lifetime of 2 ms, about 40 times longer than that of laser-excited Rydberg states, which also decay via optical transitions. These results pave the way for quantum simulation experiments over extended timescales with large arrays of Rydberg atoms.

{5630436:C2CRN8JW};{5630436:SKPP9AAZ};{5630436:8AEJHC7U} nature default asc 0 372

Research

List of publications

5630436 5FS9JZQ9 1 nature 51 date desc 1 title 372 https://www.lkb.fr/rydbergatoms/wp-content/plugins/zotpress/
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