The sensitivity of large-scale interferometric gravitational wave (GW) detectors is already nowadays limited by quantum noise at frequencies above approximately 1 kHz. Future generations of GW detectors will be limited by quantum noise almost over their entire detection band. An innovative approach to reduce this quantum noise and hence to increase the interferometer sensitivity is given by the application of squeezed states of the light field. The contribution reviews recent proof-of-principle work performed in table-top experiments and presents the status of the squeezed light source for the German-British gravitational wave detector GEO 600.
展开▼
