PAOLETTI F.

The KAGRA gravitational-wave detector in Japan is the only operating detector hosted in an underground infrastructure. Underground sites promise a greatly reduced contribution of the environment to detector noise thereby opening the possibility to extend the observation band to frequencies well below 10 Hz. For this reason, the proposed...

A movable array of environmental sensors is intended for the feed-forward cancellation of the Newtonian noise generated by atmospheric density fluctuations and seismic displacements at the Virgo gravitational wave detector site, with the prospect of being used at the sites of future 3rd generation detectors. Each robot unit is equipped with a...

The cancellation of noise from terrestrial gravity fluctuations, also known as Newtonian noise (NN), in gravitational-wave detectors is a formidable challenge. Gravity fluctuations result from density perturbations associated with environmental fields, e.g., seismic and acoustic fields, which are characterized by complex spatial correlations....

The sensitivity of future gravitational wave (GW) detectors, such as the Einstein Telescope (ET), is constrained by quantum noise across the entire frequency range (10 Hz–10 kHz) and by magnetic noise at low frequencies (a few Hz to around 100 Hz). This article examines optimizing mechanisms to achieve efficient squeezing for reducing quantum...