Berlin 2014 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 16: Poster: Quantum information, micromechanical oscillators, matter wave optics, precision measurements and metrology
Q 16.78: Poster
Monday, March 17, 2014, 16:30–18:30, Spree-Palais
Comparison of balanced homodyne detection for different wavelengths using noise-equivalent power — •Imran Khan1,2, Andreas Leitherer1,2, Christoph Marquardt1,2, and Gerd Leuchs1,2 — 1Max Planck Institute for the Science of Light, 91058 Erlangen, Germany — 2Institute of Optics, Information and Photonics, University Erlangen-Nuremberg, 91058 Erlangen, Germany
Balanced homodyne detection is a well-established and important technique in quantum optics. In recent years homodyne detection has been utilized for both discrete- and continuous-variable experiments, making it an attractive technique for a range of physical systems. In this work, we compare balanced homodyne detection for different wavelengths (ultraviolet to long-wave infrared) using the noise-equivalent power as a figure of merit.
In balanced homodyne detection, a strong coherent reference beam is used to measure the electric field quadrature of a weak signal beam. When using this method, one wants the local oscillator beam strong enough to have a good signal-to-noise ratio, but weak enough to still be in the linear regime of the detector. We will investigate the suitable parameter ranges of different detector technologies.