Phys. Rev. D 77, 062003 (2008) [11 pages]Increasing future gravitational-wave detectors’ sensitivity by means of amplitude filter cavities and quantum entanglementReceived 7 December 2007; published 14 March 2008 The future laser interferometric gravitational-wave detectors’ sensitivity can be improved using squeezed light. In particular, recently a scheme which uses the optical field with frequency-dependent squeeze factor, prepared by means of a relatively short (∼30 m) amplitude filter cavity, was proposed [ Thomas Corbitt, Nergis Mavalvala and Stan Whitcomb Phys. Rev. D 70 022002 (2004)]. Here we consider an improved version of this scheme, which allows one to further reduce the quantum noise by exploiting the quantum entanglement between the optical fields at the filter cavity two ports. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.77.062003
DOI:
10.1103/PhysRevD.77.062003
PACS:
04.80.Cc, 04.30.Db
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