Decoherence rate expression due to air molecule scattering in spatial qubits
Quantum Physics
2025-05-20 v2
Abstract
We provide a solution for decoherence in spatial superpositions due to scattering/collision with air molecules. This result reproduces the short- and long-wavelength limits known in the literature. We compare the decoherence rate with several existing interpolations in the literature and evaluate the decoherence rate and experimental parameters when creating macroscopic quantum spatial superpositions (i.e., micron-size spheres). Finally, we consider the decoherence rate's time dependence while creating and closing the spatial superposition in an interferometer setup.
Cite
@article{arxiv.2410.20910,
title = {Decoherence rate expression due to air molecule scattering in spatial qubits},
author = {Martine Schut and Patrick Andriolo and Marko Toroš and Sougato Bose and Anupam Mazumdar},
journal= {arXiv preprint arXiv:2410.20910},
year = {2025}
}
Comments
Version accepted to PRA