Quantum algorithm for gravitational-wave matched filtering

An Efficient Matched Filtering Algorithm for the Detection of Continuous Gravitational Wave Signals

Neutron stars are perhaps the most promising class of gravitational wave (GW) sources, and searches for such GW signals is particularly suited to the characteristics of the GEO600 detector (see Schutz “Getting Ready for GEO600 Data” gr–qc9910033). However, the instantaneous GW frequency of such a source will evolve due to both intrinsic spindown effects and Doppler modulations induced by the mo...

A quantum-enhanced prototype gravitational-wave detector

K. GODA1, O. MIYAKAWA2, E. E. MIKHAILOV3, S. SARAF4, R. ADHIKARI2, K. MCKENZIE5, R. WARD2, S. VASS2, A. J. WEINSTEIN2 AND N. MAVALVALA1* LIGO Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA LIGO Laboratory, California Institute of Technology, Pasadena, California 91125, USA The College of William and Mary, Williamsburg, Virginia 23187, USA Rochester Instit...

Quantum Measurement Theory in Gravitational-Wave Detectors

The fast progress in improving the sensitivity of the gravitational-wave detectors, we all have witnessed in the recent years, has propelled the scientific community to the point at which quantum behavior of such immense measurement devices as kilometer-long interferometers starts to matter. The time when their sensitivity will be mainly limited by the quantum noise of light is around the corne...

Gravitational-wave probe of effective quantum gravity

Quantum Noise in Gravitational-wave Interferometers

We present an overview of quantum noise in gravitational wave interferometers. Current gravitational wave detectors are modified variants of a Michelson interferometer and the quantum noise limits are strongly influenced by the optical configuration of the interferometer. We describe recent developments in the treatment of quantum noise in the complex interferometers of present-day and future g...