Multi-ion sensing of dipolar noise sources in ion traps

Abstract

Trapped-ion quantum platforms are subject to `anomalous' heating due to interactions with electric-field noise sources of nature not yet completely known. There is ample experimental evidence that this noise originates at the surfaces of the trap electrodes, and models assuming fluctuating point-like dipoles are consistent with observations, but the exact microscopic mechanisms behind anomalous heating remain undetermined. Here we show how a two-ion probe displays a transition in its dissipation properties, enabling experimental access to the mean orientation of the dipoles and the spatial extent of dipole-dipole correlations. This information can be used to test the validity of candidate microscopic models, which predict correlation lengths spanning several orders of mag- nitude. Furthermore, we propose an experiment to measure these effects with currently-available traps and techniques.

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Cited by in corpus (4)

• Lattice quantum magnetometry
• Dynamical and quantum effects of collective dissipation in optomechanical systems
• Coherent and radiative couplings through 2D structured environments
• Surface science motivated by heating of trapped ions from the quantum ground state