Purification of single-photon entanglement with linear optics
Physical Review A 78(5)
Article 2008 English
Authors
NS
Nicolas Sangouard
CS
Christoph Simon
TC
T. Coudreau
Abstract
1 min read
We show that single-photon entangled states of the form $\ensuremath{\mid}0⟩\ensuremath{\mid}1⟩+\ensuremath{\mid}1⟩\ensuremath{\mid}0⟩$ can be purified with a simple linear-optics-based protocol, which is eminently feasible with current technology. Besides its conceptual interest, this result is relevant for attractive quantum repeater protocols.
D. Salart, Olivier Landry, Nicolas Sangouard, Nicolas Gisin, Hartmut Herrmann, Bruno Sanguinetti, Christoph Simon, W. Sohler, Rob Thew, Allison S. Thomas, Hugo Zbinden
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