Details
| Original language | English |
|---|---|
| Article number | 073602 |
| Number of pages | 5 |
| Journal | Physical Review Letters |
| Volume | 120 |
| Issue number | 7 |
| Publication status | Published - 14 Feb 2018 |
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 numbers, small atom-light detunings, 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 backaction onto the lattice light, which we observe in a direct measurement.
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In: Physical Review Letters, Vol. 120, No. 7, 073602, 14.02.2018.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Light-Mediated Collective Atomic Motion in an Optical Lattice Coupled to a Membrane
AU - Vochezer, Aline
AU - Kampschulte, Tobias
AU - Hammerer, Klemens
AU - Treutlein, Philipp
PY - 2018/2/14
Y1 - 2018/2/14
N2 - 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 numbers, small atom-light detunings, 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 backaction onto the lattice light, which we observe in a direct measurement.
AB - 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 numbers, small atom-light detunings, 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 backaction onto the lattice light, which we observe in a direct measurement.
UR - http://www.scopus.com/inward/record.url?scp=85042143472&partnerID=8YFLogxK
U2 - 10.48550/arXiv.1705.10098
DO - 10.48550/arXiv.1705.10098
M3 - Article
C2 - 29542944
AN - SCOPUS:85042143472
VL - 120
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 7
M1 - 073602
ER -