1.1k citations · 1.4k across the 9 of their papers we have counts for
11 papers
Observing and evading quantum back-action on a kilogram-scale oscillator
Begüm Kabagöz, Eric Oelker, Dhruva Ganapathy +203
Continuous quantum displacement measurements are fundamentally limited by a trade-off between readout imprecision and measurement back-action, constrained by the Heisenberg uncerta…
Any Light Particle Searches with ALPS II: first science results
Daniel C. Brotherton, Zachary R. Bush, Sandy Croatto +37
The light-shining-through-a-wall experiment ALPS II at DESY in Hamburg searched for axions and similar lightweight particles in its first science campaign from February to May 2024…
Matrix Heater in the Gravitational Wave Observatory GEO 600
Holger Wittel, Christoph Affeldt, Aparna Bisht +7
Large scale laser interferometric gravitational wave detectors (GWDs), such as GEO 600 require high quality optics to reach their design sensitivity. The inevitable surface imperfe…
First search for nontensorial gravitational waves from known pulsars
The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +1050
We present results from the first directed search for nontensorial gravitational waves. While general relativity allows for tensorial (plus and cross) modes only, a generic metric…
GEO 600 and the GEO-HF upgrade program: successes and challenges
K. L. Dooley, J. R. Leong, T. Adams +25
The German-British laser-interferometric gravitational wave detector GEO 600 is in its 14th year of operation since its first lock in 2001. After GEO 600 participated in science ru…
Alignment sensing and control for squeezed vacuum states of light
Emil Schreiber, Kathrine L. Dooley, Henning Vahlbruch +10
Beam alignment is an important practical aspect of the application of squeezed states of light. Misalignments in the detection of squeezed light result in a reduction of the observ…
Thermal Correction of Astigmatism in the Gravitational Wave Observatory GEO 600
Holger Wittel, Harald Lück, Christoph Affeldt +10
The output port of GEO 600 is dominated by unwanted high order modes (HOMs). The current thermal actuation system, a ring heater behind one of the folding mirrors, causes a signifi…
Sensitivity Studies for Third-Generation Gravitational Wave Observatories
S. Hild, M. Abernathy, F. Acernese +136
Advanced gravitational wave detectors, currently under construction, are expected to directly observe gravitational wave signals of astrophysical origin. The Einstein Telescope, a…
Upper limits on the strength of periodic gravitational waves from PSR J1939+2134
B. Allen, G. Woan
The first science run of the LIGO and GEO gravitational wave detectors presented the opportunity to test methods of searching for gravitational waves from known pulsars. Here we pr…
The GEO600 Gravitational Wave Detector -- Pulsar Prospects
G. Woan
The GEO600 laser-interferometric gravitational wave detector near Hannover, Germany, is one of six such interferometers now close to operation worldwide. The UK/German GEO collabor…
Performance of a 1200m long suspended Fabry-Perot cavity
A. Freise, M. M. Casey, S. Gossler +9
Using one arm of the Michelson interferometer and the power recycling mirror of the interferometric gravitational wave detector GEO600, we created a Fabry-Perot cavity with a lengt…