Conveners
Exploring New Directions: Future Techniques for Next Generation Detectors
- David Ottaway
- Hartmut Grote (Cardiff University)
Exploring New Directions: GW Techniques for other Physics Experiments
- Hartmut Grote (Cardiff University)
- David Ottaway
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Jonathan Klimesch (University of Tübingen)22/05/2026, 09:00Exploring new directionsPresentation
Current and next-generation gravitational wave detectors are designed by human experts who must balance many coupled physical effects across multiple domains. At the same time, AI-based design methods are increasingly capable of proposing new experimental layouts and discovering novel measurement schemes, offering a complementary design paradigm with biases distinct from those of human...
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Tatsuya Sugioka (University of Tokyo)22/05/2026, 09:18Exploring new directionsPresentation
TOrsion-Bar Antenna (TOBA) is a ground-based gravitational wave detector using torsion pendulums. The resonant frequency of torsional motion is ∼ 1 mHz, therefore TOBA has good sensitivity in low frequency. TOBA can detect IMBH binary mergers, NN, and even contribute to earthquake early warning systems. A prototype Phase-III TOBA is under development to demonstrate noise reduction and precise...
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Dr Sander M. Vermeulen (Caltech)22/05/2026, 09:36Exploring new directionsPresentation
We present a bidirectional internal squeezing scheme for gravitational-wave detectors and show that it saturates the most stringent known lower bounds on quantum noise from internal optical dissipation. The scheme uses two optical parametric amplification stages inside the signal-extraction cavity that act on intra-cavity fields propagating in opposite directions. Thereby, most vacuum fields...
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Carl Blair (University of Western Australia)22/05/2026, 09:54Exploring new directionsPresentation
Plans for technologies to be demonstrated at the Gingin High Optical Power Facility will be presented in the context of achieving high frequency sensitivity in future gravitational wave detectors. These plans include silicon optics with AlGaAs coatings to attains extreme optical power density, large opto-mechanical interaction and the investigation of thermal distortions and correction thereof...
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Jacques Ding22/05/2026, 10:12Exploring new directionsPresentation
Quantum noise is now a central limitation in laser-interferometric gravitational-wave detectors, making it essential to identify the ultimate sensitivity allowed by quantum mechanics. Because these detectors estimate an entire gravitational-wave waveform rather than a single parameter, the relevant quantum limit is fundamentally a multiparameter one. While optimal measurements are understood...
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David Rousso (DESY)22/05/2026, 11:00Exploring new directionsPresentation
The frequency band above few kHz remains a largely unexplored frontier in gravitational wave observation, with many important and interesting new-physics phenomena lying in the region such as axion super-radiance and primordial black holes. We present a proposal for a versatile platform for detecting high-frequency gravitational waves and vector dark matter using a nanomechanical membrane...
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Shilu Tian22/05/2026, 11:18Exploring new directionsPresentation
Levitated mechanical resonators have the potential to achieve low mechanical loss and high quality factor (Q factor), which is critical for many applications, e.g. high precision sensors, and exploring fundamental quantum physics. Diamagnetic levitation is a promising technique that requires no energy input and can trap massive objects. However, conductive pyrolytic graphite, one of the...
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Todd Kozlowski22/05/2026, 11:36Exploring new directionsPresentation
The ALPS II experiment is an ongoing search for ultralight particles beyond the Standard Model of particle physics. The experiment utilizes an infrastructure unique in the world: a string of 24 straightened and aligned superconducting 5.3 T dipole magnets, with a bore sufficient to accommodate a 250-meter-long, high-finesse optical cavity. The combination of a long-storage-time optical...
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Hinata Takidera (Department of Physics, The University of Tokyo)22/05/2026, 11:54Exploring new directionsPresentation
Axions and axion-like particles (ALPs) are one of the leading candidates for dark matter. While many experiments have utilized the axion-photon conversion in magnetic fields, they have not been detected yet. Recently, novel axion dark matter search experiments using optical cavities have been proposed. These experiments are sensitive to the rotation of linearly polarized light induced by the...
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Yuta Michimura (RESCEU, University of Tokyo)22/05/2026, 12:12Exploring new directionsPresentation
Quantum gravity remains one of the major challenges in modern physics. Even at the most fundamental level, there is no experimental confirmation of whether a mass placed in a spatial superposition generates a corresponding superposition of gravitational fields. In recent years, experiments aiming to create gravity-induced quantum entanglement have attracted significant attention as a way to...
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