Speaker
Описание
Abstract
Gravitational-wave astronomy offers new opportunities for probing fundamental physics. I will briefly review current and future detection techniques and the frequency ranges and observables they can access. I will then discuss two recent proposals that aim to extend the capabilities of gravitational-wave detection in complementary directions. First, I will present QuGrav, a quantum-sensing proposal for high-frequency gravitational-wave detection based on the inverse Gertsenshtein effect, whereby gravitational waves resonantly convert into photons inside a magnetized cavity. By exploiting bosonic quantum modes and Bose enhancement, this approach can significantly amplify the graviton–photon conversion probability, potentially improving detector sensitivity by up to two orders of magnitude and opening a pathway towards probing high-frequency cosmological gravitational waves and the single-graviton regime. Second, I will introduce the Squashed Pyramid Interferometer Network (SPIN), a novel non-coplanar configuration for third-generation gravitational-wave detectors. Building on the Einstein Telescope concept, this geometry enables direct access to the isotropic circular polarization of stochastic gravitational-wave backgrounds, an observable inaccessible to conventional co-located planar detector networks. This provides a new terrestrial avenue for probing parity violation and fundamental symmetry breaking in the early Universe. Together, these proposals illustrate how quantum sensing and novel detector geometries could open new observational frontiers in gravitational-wave astronomy.
Links
https://inspirehep.net/literature/2933372
https://inspirehep.net/literature/3095607
https://inspirehep.net/literature/3142567