Treps, N.Andersen, UBuchler, BenjaminLam, Ping KoyMaitre, ABachor, HansFabre, Claude2015-12-132015-12-130031-9007http://hdl.handle.net/1885/92187The displacement measurement of a light beam below the standard quantum limit was demonstrated. The study was carried out using the continuous wave superposition of spatial modes. The multimode squeezed light was obtained by mixing a vacuum squeezed beamKeywords: Atomic force microscopy; Charge coupled devices; Imaging techniques; Laser beams; Light sources; Modulation; Photodetectors; Vacuum applications; Quantum noise; Quantum theory20022015-12-12