Quantum Gravitational Sensor for Space Debris
arXiv:2211.15695 · doi:10.1103/PhysRevD.107.104053
Abstract
Matter-wave interferometers have fundamental applications for gravity experiments such as testing the equivalence principle and the quantum nature of gravity. In addition, matter-wave interferometers can be used as quantum sensors to measure the local gravitational acceleration caused by external massive moving objects, thus lending itself for technological applications. In this paper, we will establish a three dimensional model to describe the gravity gradient signal from an external moving object, and theoretically investigate the achievable sensitivities using the matter-wave interferometer based on the Stern-Gerlach set-up. As an application we will consider the Mesoscopic Interference for Metric and Curvature (MIMAC) and Gravitational wave detection scheme [New J. Phys. 22, 083012 (2020)] and quantify its sensitivity to gravity gradients using frequency-space analysis. We will consider objects near Earth-based experiments and space debris in proximity of satellites and estimate the minimum detectable mass of the object as a function of their distance, velocity, and orientation.
13 pages, 8 figures
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- Relaxation of experimental parameters in a Quantum-Gravity Induced Entanglement of Masses Protocol using electromagnetic screening
- Micron-size spatial superpositions for the QGEM-protocol via screening and trapping
- Dephasing due to electromagnetic interactions in spatial qubits
- Decoherence rate expression due to air molecule scattering in spatial qubits
- Phonon-induced contrast in a matter-wave interferometer
- Inertial Torsion Noise in Matter-Wave Interferometers for Gravity Experiments
- Magnetic noise in macroscopic quantum spatial superposition
- Optimal Superpositions for Particle Detection via Quantum Phase