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  Light-Mediated Collective Atomic Motion in an Optical Lattice Coupled to a Membrane

Vochezer, A., Kampschulte, T., Hammerer, K., & Treutlein, P. (2018). Light-Mediated Collective Atomic Motion in an Optical Lattice Coupled to a Membrane. Physical Review Letters, 120: 073602. doi:10.1103/PhysRevLett.120.073602.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0000-BA2B-F Version Permalink: http://hdl.handle.net/21.11116/0000-0003-0215-3
Genre: Journal Article

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 Creators:
Vochezer, Aline, Author
Kampschulte, Tobias, Author
Hammerer, Klemens1, Author              
Treutlein, Philipp, Author
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              

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Free keywords: Quantum Physics, quant-ph, Condensed Matter, Mesoscale and Nanoscale Physics, cond-mat.mes-hall, Physics, Atomic Physics, physics.atom-ph
 Abstract: We observe effects of collective atomic motion in a one-dimensional optical lattice coupled to an optomechanical system. In this hybrid atom-optomechanical system, the lattice light generates a coupling between the lattice atoms as well as between atoms and a micromechanical membrane oscillator. For large atom numbers we observe an instability in the coupled system, resulting in large-amplitude atom-membrane oscillations. We show that this behavior can be explained by light-mediated collective atomic motion in the lattice, which arises for large atom number, small atom-light detuning and asymmetric pumping of the lattice, in agreement with previous theoretical work. The model connects the optomechanical instability to a phase delay in the global atomic back-action onto the lattice light, which we observe in a direct measurement.

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 Dates: 2017-05-292018-02-252018
 Publication Status: Published in print
 Pages: new introduction, title and outlook; small modifications of the main text and figures
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 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1705.10098
DOI: 10.1103/PhysRevLett.120.073602
URI: http://arxiv.org/abs/1705.10098
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Title: Physical Review Letters
  Abbreviation : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: - Volume / Issue: 120 Sequence Number: 073602 Start / End Page: - Identifier: ISSN: 0031-9007
CoNE: /journals/resource/954925433406_1