Entanglement on demand through time reordering

J. E. Avron, G. Bisker, D. Gershoni, N. H. Lindner, E. A. Meirom, R. J. Warburton

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Abstract

Entangled photons can be generated "on demand" in a novel scheme involving unitary time reordering of the photons emitted in a radiative decay cascade. The scheme yields polarization entangled photon pairs, even though prior to reordering the emitted photons carry significant "which path information" and their polarizations are unentangled. This shows that quantum chronology can be manipulated in a way that is lossless and deterministic (unitary). The theory can, in principle, be tested and applied to the biexciton cascade in semiconductor quantum dots. © 2008 The American Physical Society.

Original languageEnglish
Article number120501
JournalPhysical Review Letters
Volume100
Issue number12
DOIs
Publication statusPublished - 28 Mar 2008

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    Avron, J. E., Bisker, G., Gershoni, D., Lindner, N. H., Meirom, E. A., & Warburton, R. J. (2008). Entanglement on demand through time reordering. Physical Review Letters, 100(12), [120501]. https://doi.org/10.1103/PhysRevLett.100.120501