Many-body atomic speed sensor in lattices

Giampaolo, Salvatore Marco, Trombettoni, Andrea, Krüger, Peter and Macrì, Tommaso (2018) Many-body atomic speed sensor in lattices. Physical Review A, 97 (4). 041602 1-5. ISSN 2469-9926

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Abstract

We study the properties of transmissivity of a beam of atoms traversing an optical lattices loaded with ultracold atoms. The transmission properties as function of the energy of the incident particles are strongly dependent on the quantum phase of the atoms in the lattice. In fact, in contrast to the Mott-insulator regime, the absence of an energetic gap in the spectrum of the superfluid phase enables the atoms in the optical lattice to adapt to the presence of the beam. This induces a feedback process that has a strong impact on the transmittivity of the atoms. Based on the corresponding strong dependency we propose the implementation of a speed sensor with and estimated sensitivity of 10 8 −10 9 m/s/Hz − − − √ , which we characterize via the Fisher information. We apply our findings to a bosonic Li−Rb mixture, which is relevant for experiments with ultracold atoms. Applications of the presented scheme are discussed.

Item Type: Article
Additional Information: The Accepted version was uploaded to ArXiV 5 April 2018 https://arxiv.org/abs/1709.01510v2
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups: Atomic, Molecular and Optical Physics Research Group
Subjects: Q Science > QC Physics
Depositing User: Richard Chambers
Date Deposited: 23 Oct 2018 13:10
Last Modified: 02 Jul 2019 14:15
URI: http://sro.sussex.ac.uk/id/eprint/79656

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