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Journal Article

Quantum metrology with frequency up-converted squeezed vacuum states

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Schnabel,  Roman
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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1503.02008.pdf
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oe-23-12-16035.pdf
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Citation

Baune, C., Gniesmer, J., Schönbeck, A., Vollmer, C. E., Fiurasek, J., & Schnabel, R. (2015). Quantum metrology with frequency up-converted squeezed vacuum states. Optics Express, 23(12): 16035. doi:10.1364/OE.23.016035.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0027-9FF2-6
Abstract
Here, we report on the generation of strongly squeezed vacuum states at 532 nm with 5.5 dB noise suppression by means of frequency up-conversion from the telecommunication wavelength of 1550 nm. In addition, we report on the sub-shot noise sensitivity of a Mach-Zehnder interferometer at 532 nm and therefore, which is the first demonstration of practicability of frequency up-converted squeezed states in quantum metrology.