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Prof. Dr. Roman Schnabel

phone: +49 40 8998 5102
mail: roman.schnabel (at)

Carolin Höld (office)

phone: +49 40 8998 5100
mail: carolin.hoeld (at)

Torben Sobottke

phone: +49 40 8998 5110
mail: torben.sobottke (at)

Jan Petermann

phone: +49 40 8998 5110
mail: jan.petermann (at)


Jan Gniesmer, Daniel Hartwig, Lisa Kleybolte, Amrit Pal Sing, Jan Petermann, Axel Schönbeck, Torben Sobottke.

Visit our group's website and get to know more about our team and various research projects.


13dB Squeezed Vacuum States at 1550nm from 12mW external pump power at 775nm
A. Schönbeck, F. Thies, R. Schnabel; Opt. Lett. 43, 1 (2018)

Squeezed states of light and their applications in laser interferometers
R. Schnabel; Physics Reports 684, 1–51 (2017)

Proposal for gravitational-wave detection beyond the standard quantum limit through EPR entanglement
Y. Ma, H. Miao, B.H. Pang, M. Evans, C. Zhao, J. Harms, R. Schnabel and Y. Chen; Nature Phys. (2017)

Beating the Standard Sensitivity-Bandwidth Limit of Cavity-Enhanced Interferometers with Internal Squeezed-Light Generation
M. Korobko, L. Kleybolte, S. Ast, H. Miao, Y. Chen, and R. Schnabel; Phys. Rev. Lett. 118, 143601 (2017)

Generalized analysis of quantum noise and dynamic back-action in signal-recycled Michelson-type laser interferometers
F. Khalili, S. Tarabrin, R. Schnabel, K. Hammerer; Phys. Rev. A 94, 013844 (2016)

Einstein-Podolsky-Rosen-entangled motion of two massive objects
R. Schnabel; Phys. Rev. A 92, 012126 (2015)

Observation of generalized optomechanical coupling and cooling on cavity resonance
A. Sawadsky, H. Kaufer, R. Moghadas Nia, Sergey P. Tarabrin, F. Y. Khalili, K. Hammerer, R. Schnabel; Phys. Rev. Lett. 114, 043601 (2015)

Interferometer readout-noise below the Standard Quantum Limit of a membrane
T. Westphal, D. Friedrich, H. Kaufer, K. Yamamoto, S. Goßler, H. Müller-Ebhardt, S. L. Danilishin, F. Ya. Khalili, K. Danzmann, R. Schnabel; Phys. Rev. A 85, 063806 (2012)

Entanglement of macroscopic test masses and the standard quantum limit in laser interferometry
H. Müller-Ebhardt, H. Rehbein, R. Schnabel, K. Danzmann, Y. Chen; Phys. Rev. Lett. 100, 013601 (2008)