Precision Minimally-destructive detection of ultra-cold atomic ensembles

• URL: http://arxiv.org/abs/2506.05125v1
• Date: Thu, 05 Jun 2025 15:12:55 GMT
• Title: Precision Minimally-destructive detection of ultra-cold atomic ensembles
• Authors: Ioannis Drougkakis, Georgios Vasilakis, Wolf von Klitzing,
• Abstract summary: We report on a precise, minimally-destructive measurement technique that can be used to prepare an atomic ensemble with a desired atom number.<n>The measurement relies on the dispersive light-atom interaction, so it is expected to have a negligible effect on the ensemble temperature.<n>It can be used to perform quantum-enhanced measurements and prepare the atom-number state at the start of an interferometer sequence.
• Score: 0.3823356975862007
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Over the last two decades the cold-atom physics has matured from proof-of-principle demonstrations to a versatile platform for precision measurements and study of quantum phenomena. Ultra-cold atomic ensembles have been used both for technological and fundamental science applications. To fully exploit their potential, a precise measurement and control of the atom number in the ensemble is crucial. We report on a precise, minimally-destructive measurement technique that can be used to prepare an atomic ensemble with a desired atom number. The measurement relies on the dispersive light-atom interaction, thus it is expected to have a negligible effect on the ensemble temperature and to induce minimal decoherence in the atomic quantum state. As a result, it can be used to perform quantum-enhanced measurements and prepare the atom-number state at the start of an interferometer sequence.

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