Negative optical inertia for enhancing the sensitivity of future gravitationalwave detectors
Abstract
We consider enhancing the sensitivity of future gravitationalwave detectors by using double optical spring. When the power, detuning and bandwidth of the two carriers are chosen appropriately, the effect of the double optical spring can be described as a “negative inertia,” which cancels the positive inertia of the test masses and thus increases their response to gravitational waves. This allows us to surpass the freemass standard quantum limit (SQL) over a broad frequency band, through signal amplification, rather than noise cancellation, which has been the case for all broadband SQLbeating schemes so far considered for gravitationalwave detectors. The merit of such signal amplification schemes lies in the fact that they are less susceptible to optical losses than noisecancellation schemes. We show that it is feasible to demonstrate such an effect with the Gingin High Optical Power Test Facility, and it can eventually be implemented in future advanced GW detectors.
 Publication:

Physical Review D
 Pub Date:
 March 2011
 DOI:
 10.1103/PhysRevD.83.062003
 arXiv:
 arXiv:1010.1124
 Bibcode:
 2011PhRvD..83f2003K
 Keywords:

 04.80.Nn;
 03.65.Ta;
 42.50.Dv;
 42.50.Lc;
 Gravitational wave detectors and experiments;
 Foundations of quantum mechanics;
 measurement theory;
 Nonclassical states of the electromagnetic field including entangled photon states;
 quantum state engineering and measurements;
 Quantum fluctuations quantum noise and quantum jumps;
 General Relativity and Quantum Cosmology;
 Physics  Optics
 EPrint:
 7 pages, 3 figures