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Title: Entanglement creation and distribution on a graph of exchange-coupled qutrits

Abstract

We propose a protocol that allows both the creation and the distribution of entanglement, resulting in two distant parties (Alice and Bob) conclusively sharing a bipartite Bell state. The system considered is a graph of three-level objects (''qutrits'') coupled by SU(3) exchange operators. The protocol begins with a third party (Charlie) encoding two lattice sites in unentangled states, and allowing unitary evolution under time. Alice and Bob perform a projective measurement on their respective qutrits at a given time, and obtain a maximally entangled Bell state with a certain probablility. We also consider two further protocols, one based on simple repetition and the other based on successive measurements and conditional resetting, and show that the cumulative probability of creating a Bell state between Alice and Bob tends to unity.

Authors:
; ;  [1]
  1. Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT (United Kingdom)
Publication Date:
OSTI Identifier:
20786485
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 72; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevA.72.052333; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; 36 MATERIALS SCIENCE; BELL THEOREM; DISTRIBUTION; ENERGY LEVELS; EVOLUTION; PROBABILITY; QUANTUM COMPUTERS; QUANTUM ENTANGLEMENT; QUANTUM MECHANICS; SU-3 GROUPS

Citation Formats

Hadley, Christopher, Serafini, Alessio, and Bose, Sougato. Entanglement creation and distribution on a graph of exchange-coupled qutrits. United States: N. p., 2005. Web. doi:10.1103/PHYSREVA.72.0.
Hadley, Christopher, Serafini, Alessio, & Bose, Sougato. Entanglement creation and distribution on a graph of exchange-coupled qutrits. United States. doi:10.1103/PHYSREVA.72.0.
Hadley, Christopher, Serafini, Alessio, and Bose, Sougato. Tue . "Entanglement creation and distribution on a graph of exchange-coupled qutrits". United States. doi:10.1103/PHYSREVA.72.0.
@article{osti_20786485,
title = {Entanglement creation and distribution on a graph of exchange-coupled qutrits},
author = {Hadley, Christopher and Serafini, Alessio and Bose, Sougato},
abstractNote = {We propose a protocol that allows both the creation and the distribution of entanglement, resulting in two distant parties (Alice and Bob) conclusively sharing a bipartite Bell state. The system considered is a graph of three-level objects (''qutrits'') coupled by SU(3) exchange operators. The protocol begins with a third party (Charlie) encoding two lattice sites in unentangled states, and allowing unitary evolution under time. Alice and Bob perform a projective measurement on their respective qutrits at a given time, and obtain a maximally entangled Bell state with a certain probablility. We also consider two further protocols, one based on simple repetition and the other based on successive measurements and conditional resetting, and show that the cumulative probability of creating a Bell state between Alice and Bob tends to unity.},
doi = {10.1103/PHYSREVA.72.0},
journal = {Physical Review. A},
number = 5,
volume = 72,
place = {United States},
year = {Tue Nov 15 00:00:00 EST 2005},
month = {Tue Nov 15 00:00:00 EST 2005}
}