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We propose using the LIGO-Virgo detector network as a Hanbury Brown--Twiss (HBT) interferometer. Our focus is on the behavior of the gravitational waves at the detector rather than the source. We examine HBT interferometry for gravitational waves from binary inspirals which are currently detectable with the LIGO-Virgo network. Previous work on HBT interferometry for gravitational waves has concentrated on characterization of both classical and non-classical properties of signals from cosmological sources in the early Universe which are not detectable by the LIGO-Virgo network. Since the HBT effect can be described equally via classical intensities or via quantum graviton creation/annihilation operators, observation of this effect would not provide an unambiguous demonstration of the quantization of gravity. However, the observation of the HBT effect by LIGO-Virgo would provide a new tool in the detection and analysis of gravitational wave signals.
The detection of the gravitational wave events GW150914, GW151226, LVT 151012 and GW170104 by the Advanced LIGO antennas has opened a new possibility for the study of fundamental physics of gravitational interaction. We suggest a new method for deter
The goal of the Laser Interferometric Gravitational-Wave Observatory (LIGO) is to detect and study gravitational waves of astrophysical origin. Direct detection of gravitational waves holds the promise of testing general relativity in the strong-fiel
Two-photon superbunching of pseudothermal light is observed with single-mode continuous-wave laser light in a linear optical system. By adding more two-photon paths via three rotating ground glasses,g(2)(0) = 7.10 is experimentally observed. The seco
A stochastic background of gravitational waves is expected to arise from a superposition of many incoherent sources of gravitational waves, of either cosmological or astrophysical origin. This background is a target for the current generation of grou
Cosmic strings can give rise to a large variety of interesting astrophysical phenomena. Among them, powerful bursts of gravitational waves (GWs) produced by cusps are a promising observational signature. In this Letter we present a search for GWs fro