Detail Project and Funding

Abstract: Spatially structured quantum states, particularly those with orbital angular momentum (OAM), are crucial in quantum optics, enabling high-precision measurements. Their integration into optomechanical detection offers a promising strategy for broadband frequency sensitivity enhancement, surpassing the standard quantum limit and mitigating thermal noise.
The SQUOD project aims to develop a compact spatially structured quantum optical source to drive optomechanical detection through the direct generation of OAM quantum states via a cascaded nonlinear process. This approach integrates quantum OAM states into an advanced optical squeezer.
The proposed device offers a breakthrough for the most sophisticated optomechanical sensors, the next-generation optomechanical Gravitational Wave Detectors, like the Einstein Telescope, and beyond, enabling ultra-sensitive sensors for Casimir force detection, precision magnetometry, and quantum-enhanced metrology. With applications in quantum communication, high-resolution imaging, and precision spectroscopy, SQUOD will pave the way for next-generation quantum technologies.