Bell Inequality Violation with Two Remote Atomic Qubits

D. N. Matsukevich, P. Maunz, D. L. Moehring, S. Olmschenk, and C. Monroe
Phys. Rev. Lett. 100, 150404 – Published 18 April 2008

Abstract

We observe violation of a Bell inequality between the quantum states of two remote Yb+ ions separated by a distance of about 1 m with the detection loophole closed. The heralded entanglement of two ions is established via interference and joint detection of two emitted photons, whose polarization is entangled with each ion. The entanglement of remote qubits is also characterized by full quantum state tomography.

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  • Received 14 January 2008

DOI:https://doi.org/10.1103/PhysRevLett.100.150404

©2008 American Physical Society

Authors & Affiliations

D. N. Matsukevich*, P. Maunz, D. L. Moehring, S. Olmschenk, and C. Monroe

  • Department of Physics and Joint Quantum Institute, University of Maryland, College Park, Maryland, 20742, USA

  • *dmats@umd.edu
  • Present address: Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, D-85748 Garching, Germany.

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Issue

Vol. 100, Iss. 15 — 18 April 2008

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