Biased EPR entanglement and its application to teleportation

Authors: Bowen W.P.¹; Lam P.K.¹; Ralph T.C.²

Source: Journal of Modern Optics, Volume 50, Number 5, April 15, 2003 , pp. 801-813(13)

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Abstract:

We consider pure continuous variable entanglement with non-equal correlations between orthogonal quadratures. We introduce a simple protocol which equates these correlations and in the process transforms the entanglement onto a state with the minimum allowed number of photons. As an example we show that our protocol transforms, through unitary local operations, a single squeezed beam split on a beam splitter into the same entanglement that is produced when two squeezed beams are mixed orthogonally. We demonstrate that this technique can in principle facilitate perfect teleportation utilizing only one squeezed beam.

Document Type: Research article

DOI: http://dx.doi.org/10.1080/095003402101522620

Affiliations: 1: Department of Physics, Faculty of Science, The Australian National University, ACT 0200, Australia 2: Department of Physics, Centre for Quantum Computer Technology, University of Queensland, St Lucia, QLD, 4072 Australia

Publication date: 2003-04-01

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