Bitwise Bell-inequality violations for an entangled state involving 2N ions

Journal Article · Sat May 01 00:00:00 EDT 2004 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.69.052102· OSTI ID:20641097

Pope, D T ^[1]; Milburn, G J ^[1]

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1. School of Physical Sciences, Centre for Quantum Computer Technology, University of Queensland, Brisbane 4072, Queensland (Australia)

Following on from previous work [J.-A ring . Larsson, Phys. Rev. A 67, 022108 (2003)], Bell inequalities based on correlations between binary digits are considered for a particular entangled state involving 2N trapped ions. These inequalities involve applying displacement operations to half of the ions and then measuring correlations between pairs of corresponding bits in the binary representations of the number of center-of-mass phonons of N particular ions. It is shown that the state violates the inequalities and thus displays nonclassical correlations. It is also demonstrated that it violates a Bell inequality when the displacements are replaced by squeezing operations.

• OSTI ID: 20641097
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 69; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BELL THEOREM
CENTER-OF-MASS SYSTEM
CORRELATIONS
ENERGY LEVELS
IONS
PHONONS
QUANTUM MECHANICS
TRAPPING