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Decoherence rate expression due to air molecule scattering in spatial qubits

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arxiv 2410.20910 v2 pith:5RXIC2F3 submitted 2024-10-28 quant-ph

Martine Schut , Patrick Andriolo , Marko Toroš , Sougato Bose , Anupam Mazumdar This is my paper · ORCID
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keywords decoherenceratespatialcreatingliteraturescatteringsuperpositionsclosing
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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.

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  1. Destructive Interference of Inertial Noise in Matter-wave Interferometry

    quant-ph 2025-06 conditional novelty 6.0 of 10

    A theory shows that cross-correlated two-dimensional vibration noise in a matter-wave interferometer can be tuned to suppress dephasing by roughly the Q-factor of the noise.

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