A5054087794- Mechanical and Optical Resonators
- Advanced MEMS and NEMS Technologies
- Experimental and Theoretical Physics Studies
- Atomic and Subatomic Physics Research
- Dark Matter and Cosmic Phenomena
- Advanced Thermodynamics and Statistical Mechanics
- Force Microscopy Techniques and Applications
- Particle Detector Development and Performance
- Sensor Technology and Measurement Systems
- Quantum Mechanics and Applications
University College London
2023-2024
Optomechanical devices are being harnessed as sensors of ultraweak forces for applications ranging from inertial sensing to the search elusive dark matter. For latter, there is a focus on detection either higher energy single recoils or ultralight, narrow-band sources; directional signal expected. However, possibility searching stochastic stream weak impulses, more generally broadband signal, need not be excluded; with this and other in mind, we apply Gaussian white noise impulses well...
Motivated by the current interest in employing quantum sensors on Earth and space to conduct searches for new physics, we provide a perspective suitability of large-mass levitated optomechanical systems observing dark matter signatures. We discuss conservative approaches recoil detection through spectral analysis coherently scattered light, enhancements directional effects due cross-correlation densities, possibility using superpositions mesoscopic test particles measure rare events.
The $x$-$y$ motion of a nanosphere levitated in tweezer trap cavity has applications as quantum sensor for the direction ultraweak external forces. backaction optical field rotates orientation modes. An experimental demonstration shows accurate measurement, control, and even suppression change relative to lab frame.
Motivated by the current interest in employing quantum sensors on Earth and space to conduct searches for new physics, we provide a perspective suitability of large-mass levitated optomechanical systems observing dark matter signatures. We discuss conservative approaches recoil detection through spectral analysis coherently scattered light, enhancements directional effects due cross-correlation densities, possibility using superpositions mesoscopic test particles measure rare events.
Optomechanical devices are being harnessed as sensors of ultraweak forces for applications ranging from inertial sensing to the search elusive dark matter. For latter, there is a focus on detection either higher energy single recoils or ultralight, narrowband sources; directional signal expected. However, possibility searching stochastic stream weak impulses, more generally broadband signal, need not be excluded; with this and other in mind, we investigate experimental signature Gaussian...
Optomechanical devices are being actively harnessed as sensors for ultraweak forces, with a growing range of applications including inertial sensing or dark matter sensors. Dark searches aim to use directional detection discriminate from interfering backgrounds. We present calibration-free approach measurements stochastic forces by using the cross-correlation power spectra. show that these provide distinctive signature presence broad-spectrum force, well its orientation quadrant. Accurate...