[PDF] Top 20 Squeezed light sources for current and future interferometric gravitational-wave detectors

... The gravitational-wave signal emitted from such sources is well known, pro- ducing a distinctive chirp waveform as a function of frequency and ...the gravitational-wave signal the ... See full document

... the light that strikes them, so there are light-induced noise sources in addition to intrinsic thermal ...the light itself is subject to photon shot noise and other intensity variations, this ... See full document

... (a) Interferometric GW detectors use high power light fields to reduce the relative shot ...instability. Squeezed vacuum states of light injected into the signal port (being close to a ... See full document

... of light have a minimum compromise of noise between any two orthogonal quadratures (equation ...interrogating light, imposing a lower limit to readout ...in interferometric gravitational ... See full document

... for future gravitational wave ...predict light source noise couplings, which depend critically on cancellation ...the light source noises can couple strongly through the auxiliary ... See full document

... the current LIGO-VIGRO-GEO network into a worldwide alliance of interferometric detectors operating in co-ordination to extract the maximal scientific ...generation detectors like Ad- vanced ... See full document

... the light of tests carried out on actual suspensions, the need to compensate for mechanical creep was relaxed to a working span of just ...single-LED-column sources of illumination, mentioned in ...their ... See full document

... advanced interferometric gravitational wave detectors such as Advanced LIGO (aLIGO) [1] are envisaged before the realisation of third- generation detectors such as the Einstein ... See full document

... the detectors to bring them to their design sensitivity, not all of the interferometer parameters were at their design values during ...in future observational ...noise sources as well as currently ... See full document

... this current was converted into an oscillating voltage, which was then amplified, and ...housings, detectors ‘C’ and ‘A’ (and, likewise, ‘B’ and ‘D’) were separated by a horizontal pitch of ...LED-based ... See full document

... since future gravitational-wave detectors may use different substrate and coating materials, situations may arise when the loss angle measured now does not correlate with the total coating ... See full document

... of light, to reveal both classi- cal and quantum noise spectra underlying the observed sensitivity curve of Advanced ...mated future detector sensitivity when the input power is increased and quantum shot ... See full document

... in gravitational-wave detection [122] and scanning probe microscopy, optomechanical devices can also be used to probe the quantum behavior of mechanical ...of squeezed light injected to ... See full document

... LIGO detectors have optical cavities in the central part of the interferometer whose lengths must be controlled to keep the interferometer at its linear operating ...the gravitational wave readout ... See full document

... We have presented an ultra-sensitive nanowire-based sensor for impulsive forces, and demonstrated three distinct but related approaches to improving its sensi- tivity. First, by employing a non-stationary physical ... See full document

... very-high-frequency gravitational waves at Birmingham University, ...high-frequency gravitational wave (HFGW) detectors have been either fabricated or ... See full document

... scattered light within the vacuum envelope of a gravitational wave interferometer can degrade the sensitivity ...of light out of the main resonant mode of the interferometer. This light ... See full document

... the detectors themselves, under all practical conditions of illumination, and over the desired VM bandwidth—despite the rather low levels of DC photocurrent induced in the detector’s sensor ... See full document

... Rotations of the stack about a vertical axis were not accounted for in the finite element model: yet these could be important for the coupling of rotational ground noise to horizontal no[r] ... See full document

... The GW emission by cusps depends on the loop size, which is often written as a fraction of the horizon at the time of formation l ¼ α t, where t is the cosmic time. Early simulations such as Ref. [25] suggested that the ... See full document