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29 March 2024 |
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Article overview
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A single atom detector integrated on an atom chip: fabrication, characterization and application | D. Heine
; W. Rohringer
; D. Fischer
; M. Wilzbach
; T. Raub
; S. Loziczky
; XiYuan Liu
; S. Groth
; B. Hessmo
; J. Schmiedmayer
; | Date: |
8 Feb 2010 | Abstract: | We describe a robust and reliable fluorescence detector for single atoms that
is fully integrated into an atom chip. The detector allows spectrally and
spatially selective detection of atoms, reaching a single atom detection
efficiency of 66%. It consists of a tapered lensed single-mode fiber for
precise delivery of excitation light and a multi-mode fiber to collect the
fluorescence. The fibers are mounted in lithographically defined holding
structures on the atom chip. Neutral 87Rb atoms propagating freely in a
magnetic guide are detected and the noise of their fluorescence emission is
analyzed. The variance of the photon distribution allows to determine the
number of detected photons / atom and from there the atom detection efficiency.
The second order intensity correlation function of the fluorescence shows
near-perfect photon anti-bunching and signs of damped Rabi-oscillations. With
simple improvements one can boost the detection efficiency to > 95%. | Source: | arXiv, 1002.1573 | Services: | Forum | Review | PDF | Favorites |
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