Rapid generation and number-resolved detection of spinor Rubidium Bose-Einstein condensates

• URL: http://arxiv.org/abs/2301.08172v1
• Date: Thu, 19 Jan 2023 17:04:12 GMT
• Title: Rapid generation and number-resolved detection of spinor Rubidium Bose-Einstein condensates
• Authors: Cebrail P\"ur, Mareike Hetzel, Martin Quensen, Andreas H\"uper, Jiao Geng, Jens Kruse, Wolfgang Ertmer, Carsten Klempt
• Abstract summary: We present a high-flux source of $87$Rb Bose-Einstein condensates combined with a number-resolving detection. We create Bose-Einstein condensates of $2times105$ atoms with no discernible thermal fraction within $3.3$ s using a hybrid evaporation approach in a magnetic/optical trap.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: High data acquisition rates and low-noise detection of ultracold neutral atoms present important challenges for the state tomography and interferometric application of entangled quantum states in Bose-Einstein condensates. In this article, we present a high-flux source of $^{87}$Rb Bose-Einstein condensates combined with a number-resolving detection. We create Bose-Einstein condensates of $2\times10^5$ atoms with no discernible thermal fraction within $3.3$ s using a hybrid evaporation approach in a magnetic/optical trap. For the high-fidelity tomography of many-body quantum states in the spin degree of freedom [arXiv:2207.01270], it is desirable to select a single mode for a number-resolving detection. We demonstrate the low-noise selection of subsamples of up to $16$ atoms and their subsequent detection with a counting noise below $0.2$ atoms. The presented techniques offer an exciting path towards the creation and analysis of mesoscopic quantum states with unprecedented fidelities, and their exploitation for fundamental and metrological applications.

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