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  Anomalous dynamic backaction in interferometers

Tarabrin, S. P., Khalili, F. Y., Kaufer, H., Schnabel, R., & Hammerer, K. (2013). Anomalous dynamic backaction in interferometers. Physical Review A, 88: 023809. doi:10.1103/PhysRevA.88.023809.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-EA37-6 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-1402-C
Genre: Journal Article
Other : Anomalous dynamic back-action in interferometers: beyond the scaling law

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Tarabrin, Sergey P., Author
Khalili, Farid Ya., Author
Kaufer, Henning1, Author              
Schnabel, R.1, Author              
Hammerer, Klemens1, 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,General Relativity and Quantum Cosmology, gr-qc, Physics, Optics, physics.optics
 Abstract: We analyze dynamic optomechanical back-action effects in signal-recycled Michelson and Michelson-Sagnac interferometers that are operated off dark port. Up to now, their optomechanics has been studied under dark port condition only. For the dark port case and in the context of gravitational wave detectors, the `scaling law' assured that all back-action effects can be understood on the basis of the much simpler topology of a Fabry-Perot interferometer. Off dark port, our theoretical and experimental analysis reveals certain `anomalous' features as compared to the ones of `canonical' back-action, obtained within the scope of scaling law. In particular, optical damping as a function of detuning acquires a non-zero value on cavity resonance, and several stability/instability regions on either side of the cavity resonance appear. We report on the experimental observation of these instabilities on both sides of the cavity resonance in a Michelson-Sagnac interferometer with a micromechanical membrane. For a certain region of parameters, a stable optical spring (that is positive shifts of frequency and damping) in a free-mass interferometer with a single laser drive are possible. Our results can find implementations in both cavity optomechanics, revealing new regimes of cooling of micromechanical oscillators, and in gravitational-wave detectors, revealing the possibility of stable single-carrier optical spring which can be utilized for the reduction of quantum noise in future-generation detectors.

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 Dates: 2012-12-262013
 Publication Status: Published in print
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 Identifiers: arXiv: 1212.6242
DOI: 10.1103/PhysRevA.88.023809
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Title: Physical Review A
  Other : Phys. Rev. A
Source Genre: Journal
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Publ. Info: New York, NY : American Physical Society
Pages: - Volume / Issue: 88 Sequence Number: 023809 Start / End Page: - Identifier: ISSN: 1050-2947
CoNE: /journals/resource/954925225012_2