Entanglement between two spatially separated atomic modes

authored by: Karsten Lange, Jan Peise, Bernd Lücke, Ilka Kruse, Giuseppe Vitagliano, Iagoba Apellaniz, Matthias Kleinmann, Géza Tóth, Carsten Klempt
Abstract: Modern quantum technologies in the fields of quantum computing, quantum simulation, and quantum metrology require the creation and control of large ensembles of entangled particles. In ultracold ensembles of neutral atoms, nonclassical states have been generated with mutual entanglement among thousands of particles. The entanglement generation relies on the fundamental particle-exchange symmetry in ensembles of identical particles, which lacks the standard notion of entanglement between clearly definable subsystems. Here, we present the generation of entanglement between two spatially separated clouds by splitting an ensemble of ultracold identical particles prepared in a twin Fock state. Because the clouds can be addressed individually, our experiments open a path to exploit the available entangled states of indistinguishable particles for quantum information applications.
Organisation(s): Institute of Quantum Optics
CRC 1227 Designed Quantum States of Matter (DQ-mat)
External Organisation(s): Austrian Academy of Sciences
University of the Basque Country
University of Siegen
Ikerbasque, the Basque Foundation for Science
Hungarian Academy of Sciences
Type: Article
Journal: Science
Volume: 360
Pages: 416-418
No. of pages: 3
ISSN: 0036-8075
Publication date: 27.04.2018
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: General
Electronic version(s): https://doi.org/10.48550/arXiv.1708.02480 (Access: Open)
https://doi.org/10.1126/science.aao2035 (Access: Closed)

BibTeX

@article{a2bd756ff36a4cda96d1e5beea1976b7,
title = "Entanglement between two spatially separated atomic modes",
abstract = "Modern quantum technologies in the fields of quantum computing, quantum simulation, and quantum metrology require the creation and control of large ensembles of entangled particles. In ultracold ensembles of neutral atoms, nonclassical states have been generated with mutual entanglement among thousands of particles. The entanglement generation relies on the fundamental particle-exchange symmetry in ensembles of identical particles, which lacks the standard notion of entanglement between clearly definable subsystems. Here, we present the generation of entanglement between two spatially separated clouds by splitting an ensemble of ultracold identical particles prepared in a twin Fock state. Because the clouds can be addressed individually, our experiments open a path to exploit the available entangled states of indistinguishable particles for quantum information applications.",
author = "Karsten Lange and Jan Peise and Bernd L{\"u}cke and Ilka Kruse and Giuseppe Vitagliano and Iagoba Apellaniz and Matthias Kleinmann and G{\'e}za T{\'o}th and Carsten Klempt",
note = "Funding information: C.K. thanks M. Cramer for the discussion at the 589. Heraeus seminar that led to the initial idea for the experiments. C.K. thanks A. Smerzi, L. Santos, and W. Ertmer for regular inspiring discussions and a review of the manuscript. Funding: This work was supported by the European Union (European Research Council Starting Grant 258647/GEDENTQOPT, CHIST-ERA QUASAR, COST Action CA15220, European Research Council Consolidator Grant 683107/TempoQ and QuantERA CEBBEC); the Spanish Ministry of Economy, Industry and Competitiveness and the European Regional Development Fund FEDER through grant FIS2015-67161-P (MINECO/FEDER); the Basque government (project IT986-16); the National Research, Development, and Innovation Office (NKFIH) (grant K124351); the Deutsche Forschungsgemeinschaft (DFG) (Forschungsstipendium KL 2726/2-1 and project KL2421/2-1); the FQXi (grant FQXi-RFP-1608); and the Austrian Science Fund (FWF) through the START project Y879-N27. We also acknowledge support from DFG through RTG 1729 and CRC 1227 (DQ-mat), project A02.",
year = "2018",
month = apr,
day = "27",
doi = "10.48550/arXiv.1708.02480",
language = "English",
volume = "360",
pages = "416--418",
journal = "Science",
issn = "0036-8075",
publisher = "American Association for the Advancement of Science",
number = "6387",
}