High Sensitivity Gravitational Wave Antenna with Parametric Transducer Readout
Physical Review Letters1995Vol. 74(11), pp. 1908–1911
Citations Over TimeTop 10% of 1995 papers
Abstract
A high- $Q$ niobium resonant mass gravitational radiation antenna with a superconducting parametric transducer and noncontacting readout is shown to achieve a noise temperature of about 2 mK using a zero order predictor filter. The predicted intrinsic cold damping of a parametric transducer is confirmed, along with predicted backaction limits on the sensitivity. While the antenna has the highest intrinsic $Q$ factor and lowest noise temperature ever observed in a full scale antenna, the possibility of further improvements is demonstrated.
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