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Collective State Measurement of Mesoscopic Ensembles with Single-Atom Resolution.
- Source :
-
Physical Review Letters . 9/28/2012, Vol. 109 Issue 13, p1-5. 5p. - Publication Year :
- 2012
-
Abstract
- We demonstrate single-atom resolution, as well as detection sensitivity more than 20 dB below the quantum projection noise limit, for hyperfine-state-selective measurements on mesoscopic ensembles containing 100 or more atoms. The measurement detects the atom-induced shift of the resonance frequency of an optical cavity containing the ensemble. While spatially varying coupling of atoms to the cavity prevents the direct observation of a quantized signal, the demonstrated measurement resolution provides the readout capability necessary for atomic interferometry substantially below the standard quantum limit and down to the Heisenberg limit. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00319007
- Volume :
- 109
- Issue :
- 13
- Database :
- Academic Search Index
- Journal :
- Physical Review Letters
- Publication Type :
- Academic Journal
- Accession number :
- 82770165
- Full Text :
- https://doi.org/10.1103/PhysRevLett.109.133603