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Quantum limits of coherent beam combining

: Leuchs, G.; Müller, C.R.; Sedlmeir, F.; Chatterjee, S.; Haarlammert, N.; Jauregui, C.; Schreiber, T.; Limpert, J.; Tünnermann, A.; Marquardt, C.


Optical Society of America -OSA-, Washington/D.C.:
Conference on Lasers and Electro-Optics/Pacific Rim 2018 : 29 July-3 August 2018, Hong Kong, China
Washington, DC: OSA, 2018
ISBN: 978-1-943580-45-3
Paper Th4D.2
Conference on Lasers and Electro-Optics/Pacific Rim (CLEO/PR) <2018, Hong Kong>
Fraunhofer IOF ()

Coherent beam combining refers to the process of generating a bright output beam by merging independent input beams with locked relative phases. We report the first quantum mechanical noise limit calculations for coherent beam combining and compare our results to quantum-limited amplification. We highlight a favourable noise scaling for both pure and noisy input states.