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Generation and detection of a sub-Poissonian atom number distribution in a one-dimensional optical lattice



Generation and detection of a sub-Poissonian atom number distribution in a one-dimensional optical lattice



Physical Review Letters 113(26): 263603



We demonstrate preparation and detection of an atom number distribution in a one-dimensional atomic lattice with the variance -14  dB below the Poissonian noise level. A mesoscopic ensemble containing a few thousand atoms is trapped in the evanescent field of a nanofiber. The atom number is measured through dual-color homodyne interferometry with a pW-power shot noise limited probe. Strong coupling of the evanescent probe guided by the nanofiber allows for a real-time measurement with a precision of ±8  atoms on an ensemble of some 10(3)  atoms in a one-dimensional trap. The method is very well suited for generating collective atomic entangled or spin-squeezed states via a quantum nondemolition measurement as well as for tomography of exotic atomic states in a one-dimensional lattice.

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Accession: 057925846

Download citation: RISBibTeXText

PMID: 25615331

DOI: 10.1103/PhysRevLett.113.263603


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