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20 April 2024

» arxiv » 1203.3160

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Collective state measurement of mesoscopic ensembles with single-atom resolution
Hao Zhang ; Robert McConnell ; Senka Ćuk ; Qian Lin ; Monika H. Schleier-Smith ; Ian D. Leroux ; Vladan Vuletić ;
Date:	14 Mar 2012
Abstract:	For mesoscopic ensembles containing 100 or more atoms we measure the total atom number and the number of atoms in a specific hyperfine state with single-atom resolution. The measurement detects the atom-induced shift of the resonance frequency of an optical cavity containing the ensemble. This work extends the range of cavity-based detection with single-atom resolution by more than an order of magnitude in atom number, and provides the readout capability necessary for Heisenberg-limited interferometry with atomic ensembles.
Source:	arXiv, 1203.3160
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