0203134v1

related topics
{state, phys, rev}
{photon, photons, single}
{alice, bob, state}
{qubit, qubits, gate}

Practical quantum repeaters with linear optics and double-photon guns

Pieter Kok, Colin P. Williams, Jonathan P. Dowling

abstract: We show how to create practical, efficient, quantum repeaters, employing double-photon guns, for long-distance optical quantum communication. The guns create polarization-entangled photon pairs on demand. One such source might be a semiconducter quantum dot, which has the distinct advantage over parametric down-conversion that the probability of creating a photon pair is close to one, while the probability of creating multiple pairs vanishes. The swapping and purifying components are implemented by polarizing beam splitters and probabilistic optical CNOT gates.

oai_identifier:
oai:arXiv.org:quant-ph/0203134
categories:
quant-ph
comments:
4 pages, 4 figures ReVTeX
doi:
10.1103/PhysRevA.68.022301
arxiv_id:
quant-ph/0203134
journal_ref:
Phys. Rev. A 68, 022301 (2003).
created:
2002-03-27

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