Twin Matter Waves for Interferometry Beyond the Classical Limit
Anno: 2011
Autori: Luecke B., Scherer M., Kruse J., Pezzè L., Deuretzbacher F., Hyllus P., Topic O., Peise J., Ertmer W., Arlt J., Santos L., Smerzi A., Klempt C.
Affiliazione autori: Institut für Quantenoptik, Leibniz Universität Hannover, 30167 Hannover, Germany;
Istituto Nazionale di Ottica (INO), Consiglio Nazionale delle Ricerche (CNR), and European Laboratory for Non-Linear Spectroscopy (LENS), 50125 Firenze, Italy;
Institut für Theoretische Physik, Leibniz Universität Hannover, 30167 Hannover, Germany;
Department of Theoretical Physics, The University of the Basque Country, 48080 Bilbao, Spain;
Center for Quantum Optics (QUANTOP), Institut for Fysik og Astronomi, Aarhus Universitet, 8000A°rhus C, Denmark
Abstract: Interferometers with atomic ensembles are an integral part of modern precision metrology. However, these interferometers are fundamentally restricted by the shot noise limit, which can only be overcome by creating quantum entanglement among the atoms. We used spin dynamics in Bose-Einstein condensates to create large ensembles of up to 10(4) pair-correlated atoms with an interferometric sensitivity -1.61(-1.1)(+0.98) decibels beyond the shot noise limit. Our proof-of-principle results point the way toward a new generation of atom interferometers.
Giornale/Rivista: SCIENCE
Volume: 334 (6057) Da Pagina: 773 A: 776
Maggiori informazioni: We thank E. Rasel for stimulating discussions and P. Zoller for helpful comments. We acknowledge support from the Centre for Quantum Engineering and Space-Time Research (QUEST), the European Science Foundation (EuroQUASAR), and the Danish National Research Foundation Center for Quantum Optics. P.H. acknowledges financial support of the European Research Council Starting Grant GEDENTQOPT. This work was supported in part by Provincia Autonoma di Trento within the activities of the BEC center. L.P. acknowledges support by the Laboratoire Charles Fabry de L’Institut d’ Optique where part of this work was completed.Parole chiavi: Standard Quantum Limit; Beam Splitter; Entanglement; States; PhotonsDOI: 10.1126/science.1208798Citazioni: 351dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-02-09Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui