Coherent Population Trapping with Controlled Interparticle Interactions

Abstract

We investigate Coherent Population Trapping in a strongly interacting ultracold Rydberg gas. Despite the strong van der Waals interactions and interparticle correlations, we observe the persistence of a resonance with subnatural linewidth at the single-particle resonance frequency as we tune the interaction strength. This narrow resonance cannot be understood within a meanfield description of the strong Rydberg--Rydberg interactions. Instead, a many-body density matrix approach, accounting for the dynamics of interparticle correlations, is shown to reproduce the observed spectral features.

References in corpus (8)

• Dynamical Crystallization in the Dipole Blockade of Ultracold Atoms
• Quantum gates and multi-particle entanglement by Rydberg excitation blockade and adiabatic passage
• Quantum critical behavior in strongly interacting Rydberg gases
• Giant electro-optic effect using polarizable dark states
• Electromagnetically induced transparency of an interacting cold Rydberg ensemble
• Investigation of dephasing rates in an interacting Rydberg gas
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