Gradient-Based Inverse Optimization of Atom-Chip Wire Currents for BEC Transport

• URL: http://arxiv.org/abs/2508.11712v1
• Date: Thu, 14 Aug 2025 10:27:08 GMT
• Title: Gradient-Based Inverse Optimization of Atom-Chip Wire Currents for BEC Transport
• Authors: Naoki Shibuya,
• Abstract summary: Modulating wire currents to shift a magnetic trap along an atom chip enables smooth contact-free delivery of Bose-Einstein condensates but can deform the confinement profile causing heating and atom loss.<n>We introduce a fast simulation framework based on inverse optimization that computes a wire current schedule that transports the atoms and restores the trap geometry upon arrival.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Modulating wire currents to shift a magnetic trap along an atom chip enables smooth contact-free delivery of Bose-Einstein condensates but can deform the confinement profile causing parametric heating and atom loss. We introduce a fast simulation framework based on inverse optimization that, given an initial trap and a predefined trajectory over time, computes a wire current schedule that transports the atoms and restores the trap geometry upon arrival. We assess trap's minimum energy, lateral displacement, confinement profile and an adiabaticity parameter over a 2.4 mm trajectory for various transport durations between 2s and 5s, demonstrating the trade-off between speed and adiabaticity.

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