Trapping and observing single atoms in a blue-detuned intracavity dipole trap

T. Puppe*, I. Schuster, A. Grothe, A. Kubanek, K. Murr, P. W H Pinkse, G. Rempe

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

59 Citations (Scopus)
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A single atom strongly coupled to a cavity mode is stored by three-dimensional confinement in blue-detuned cavity modes of different longitudinal and transverse order. The vanishing light intensity at the trap center reduces the light shift of all atomic energy levels. This is exploited to detect a single atom by means of a dispersive measurement with 95% confidence in 10μs, limited by the photon-detection efficiency. As the atom switches resonant cavity transmission into cavity reflection, the atom can be detected while scattering about one photon.

Original languageEnglish
Article number013002
JournalPhysical review letters
Issue number1
Publication statusPublished - 6 Jul 2007
Externally publishedYes


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