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Béguin JB, Bookjans EM, Christensen SL, et al. Generation and detection of a sub-Poissonian atom number distribution in a one-dimensional optical lattice. Phys Rev Lett. 2014;113(26):263603doi: 10.1103/PhysRevLett.113.263603.
Béguin, J. B., Bookjans, E. M., Christensen, S. L., Sørensen, H. L., Müller, J. H., Polzik, E. S., & Appel, J. (2014). Generation and detection of a sub-Poissonian atom number distribution in a one-dimensional optical lattice. Physical review letters, 113(26), 263603. https://doi.org/10.1103/PhysRevLett.113.263603
Béguin, J-B, et al. "Generation and detection of a sub-Poissonian atom number distribution in a one-dimensional optical lattice." Physical review letters vol. 113,26 (2014): 263603. doi: https://doi.org/10.1103/PhysRevLett.113.263603
Béguin JB, Bookjans EM, Christensen SL, Sørensen HL, Müller JH, Polzik ES, Appel J. Generation and detection of a sub-Poissonian atom number distribution in a one-dimensional optical lattice. Phys Rev Lett. 2014 Dec 31;113(26):263603. doi: 10.1103/PhysRevLett.113.263603. Epub 2014 Dec 30. PMID: 25615331.
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Phys Rev Lett. 2014 Dec 31;113(26):263603. doi: 10.1103/PhysRevLett.113.263603. Epub 2014 Dec 30.

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

Physical review letters

J-B Béguin, E M Bookjans, S L Christensen, H L Sørensen, J H Müller, E S Polzik, J Appel

Affiliations

  1. QUANTOP, Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, 2100 Copenhagen, Denmark.

PMID: 25615331 DOI: 10.1103/PhysRevLett.113.263603

Abstract

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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