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Proceedings Paper

Towards quantum simulations with circular Rydberg atoms (Conference Presentation)
Author(s): Clément Sayrin; Rodrigo Cortiñas; Brice Ravon; Paul Méhaignerie; Maxime Favier; Jean-Michel Raimond; Yohann Machu; Michel Brune

Paper Abstract

We propose a novel platform for the realisation of quantum simulations of spin arrays, providing unprecedented flexibility and allowing one to explore regimes beyond the reach of other platforms. It is based on laser-trapped circular Rydberg levels. The strong van der Waals interaction between the atoms emulates a spin-1/2 XXZ Hamiltonian. All its parameters are experimentally and dynamically tunable over a wide range. A spontaneous-emission inhibiting structure extends the lifetime of individual laser-trapped circular Rydberg atoms to the minute range. Quantum simulations over more than $10^4$ interaction cycles are thus within reach. This enables the observation of adiabatic evolutions through quantum phase transitions, of sudden quenches, and fast modulations of the interaction parameters. After I present the key features of this simulator, I will focus on our latest experimental results regarding the preparation and manipulation of laser-cooled circular Rydberg atoms in the vicinity of an atomchip in an optical-access 4K-cryostat. Lifetime measurements reveal a below-10K microwave blackbody temperature, while Ramsey interferometry shows coherence times solely limited by magnetic field noise. I will finally present our latest results on laser-trapping of circular Rydberg atoms, a decisive step towards the realisation of the proposed quantum simulator.

Paper Details

Date Published: 30 March 2020
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Proc. SPIE 11347, Quantum Technologies 2020, 1134707 (30 March 2020); doi: 10.1117/12.2554889
Show Author Affiliations
Clément Sayrin, Lab. Kastler Brossel, Collège de France, CNRS (France)
Ecole Normale Supérieure, Univ. PSL (France)
Sorbonne Univ. (France)
Rodrigo Cortiñas, Lab. Kastler Brossel, Collège de France, CNRS (France)
Ecole Normale Supérieure, Univ. PSL (France)
Sorbonne Univ. (France)
Brice Ravon, Lab. Kastler Brossel, Collège de France, CNRS (France)
Ecole Normale Supérieure, Univ. PSL (France)
Sorbonne Univ. (France)
Paul Méhaignerie, Lab. Kastler Brossel, Collège de France, CNRS (France)
Ecole Normale Supérieure, Univ. PSL (France)
Sorbonne Univ. (France)
Maxime Favier, Lab. Kastler Brossel, Collège de France, CNRS (France)
Ecole Normale Supérieure, Univ. PSL (France)
Sorbonne Univ. (France)
Jean-Michel Raimond, Lab. Kastler Brossel, Collège de France, CNRS (France)
Ecole Normale Supérieure, Univ. PSL (France)
Sorbonne Univ. (France)
Yohann Machu, Lab. Kastler Brossel, Collège de France, CNRS (France)
Ecole Normale Supérieure, Univ. PSL (France)
Sorbonne Univ. (France)
Michel Brune, Lab. Kastler Brossel, Collège de France, CNRS (France)
Ecole Normale Supérieure, Univ. PSL (France)
Sorbonne Univ. (France)


Published in SPIE Proceedings Vol. 11347:
Quantum Technologies 2020
Eleni Diamanti; Sara Ducci; Nicolas Treps; Shannon Whitlock, Editor(s)

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