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arXiv · 0708.2794

Freezing distributed entanglement in spin chains

Irene D'Amico·Brendon W. Lovett·Timothy P. Spiller
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Abstract

We show how to freeze distributed entanglement that has been created from the natural dynamics of spin chain systems. The technique that we propose simply requires single-qubit operations and isolates the entanglement in specific qubits at the ends of branches. Such frozen entanglement provides a useful resource, for example for teleportation or distributed quantum processing. The scheme can be applied to a wide range of systems -- including actual spin systems and alternative qubit embodiments in strings of quantum dots, molecules or atoms.

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Irene D'Amico, Brendon W. Lovett, Timothy P. Spiller. 2007-08-21. Freezing distributed entanglement in spin chains. https://doi.org/10.1103/physreva.76.030302

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