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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Grover Swartzlander
  • Vol. 31, Iss. 7 — Jul. 1, 2014
  • pp: 1568–1572

Ion–photon entanglement and Bell inequality violation with 138Ba+

Carolyn Auchter, Chen-Kuan Chou, Thomas W. Noel, and Boris B. Blinov  »View Author Affiliations


JOSA B, Vol. 31, Issue 7, pp. 1568-1572 (2014)
http://dx.doi.org/10.1364/JOSAB.31.001568


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Abstract

We report on the demonstration of ion–photon entanglement and Bell inequality violation in a system of trapped Ba138+ ions. Entanglement between the Zeeman sublevels of the ground state of a single Ba138+ ion and the polarization state of a single 493 nm photon emitted by the ion with a fidelity of 0.84±0.01 was achieved, along with a Bell signal of 2.3, exceeding the classical limit of 2 by more than eight standard deviations. This system is a promising candidate for a loophole-free Bell inequality violation test using long-range ion–ion entanglement as the wavelengths of the transitions of Ba138+ are in the visible region and thus suitable for long-range transmission over fiber optic cable.

© 2014 Optical Society of America

OCIS Codes
(020.0020) Atomic and molecular physics : Atomic and molecular physics
(270.0270) Quantum optics : Quantum optics
(270.5585) Quantum optics : Quantum information and processing

ToC Category:
Quantum Optics

History
Original Manuscript: February 20, 2014
Revised Manuscript: April 15, 2014
Manuscript Accepted: May 7, 2014
Published: June 13, 2014

Citation
Carolyn Auchter, Chen-Kuan Chou, Thomas W. Noel, and Boris B. Blinov, "Ion–photon entanglement and Bell inequality violation with 138Ba+," J. Opt. Soc. Am. B 31, 1568-1572 (2014)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-31-7-1568


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