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Article Dans Une Revue Physical Review A Année : 2022

Adiabatic quantum Zeno dynamics of bosonic atom pairs with large inelastic losses

Manel Bosch Aguilera
Raphaël Bouganne
Jérôme Beugnon
Fabrice Gerbier

Résumé

We report on experiments exploring the non-Hermitian dynamics of pairs of two-level atoms tightly confined in an optical lattice and driven by a near-resonant laser. Although spontaneous emission is negligible for the long-lived excited state, two-body dissipation arises from strong inelastic collisions between two atoms in the excited state. We demonstrate quasi-adiabatic control of the internal state of the pairs in the quantum Zeno regime where inelastic losses dominate. Preparing each atom pair in the longest-lived eigenstate of the non-Hermitian Hamiltonian describing the dissipative dynamics, we measure a lifetime enhanced by more than two orders of magnitude in comparison to the bare two-body lifetime. The measured enhancement factor is in quantitative agreement with the expected lifetime of the prepared “non-Hermitian dressed state.”
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hal-03863283 , version 1 (19-12-2023)

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Citer

Manel Bosch Aguilera, Rémy Vatré, Raphaël Bouganne, Jérôme Beugnon, Fabrice Gerbier, et al.. Adiabatic quantum Zeno dynamics of bosonic atom pairs with large inelastic losses. Physical Review A, 2022, 106 (5), pp.053304. ⟨10.1103/PhysRevA.106.053304⟩. ⟨hal-03863283⟩
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