Many-body atomic speed sensor in lattices

Giampaolo, Salvatore Marco; Trombettoni, A.; Krüger, P.; Macrí, T (2018) Many-body atomic speed sensor in lattices. Physical Review A, 97 (4). ISSN 2469-9926

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Abstract

We study the properties of transmissivity of a beam of atoms traversing an optical lattice loaded with ultracold atoms. The transmission properties as a function of the energy of the incident particles are dependent on the quantum phase of the atoms in the lattice. In fact, in contrast to an 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 backaction 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 an estimated sensitivity of 10^8-10^9 m/s. We point out that the velocity sensitivity improves when the interaction term in the optical lattice increases. Applications of the presented scheme are discussed.ce increases. Applications of the presented scheme are discussed.

Item Type:	Article
Additional Information:	We acknowledge A. Smerzi and all members of the Matterwave consortium for useful discussions. T.M. acknowledges CNPq for support through Bolsa de Produtividade em Pesquisa No. 311079/2015-6. Support from the EU-FET Proactive Action (Grant No. 601180 MatterWave) is also acknowledged. Publisher
Uncontrolled Keywords:	optical lattices
Subjects:	NATURAL SCIENCES > Physics > Condensed Matter Physics
Divisions:	UNSPECIFIED
Depositing User:	Salvatore Marco Giampaolo
Date Deposited:	30 Apr 2020 06:06
URI:	http://fulir.irb.hr/id/eprint/5443
DOI:	10.1103/PhysRevA.97.041602

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