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Updated: Jul 12, 2026

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
Published on: August 12, 2013
Optimal cloning of coherent states with a linear amplifier and beam splitters
S L Braunstein1, N J Cerf, S Iblisdir
1Informatics, Bangor University, Bangor LL57 1UT, United Kingdom.
Abstract:
A transformation achieving the optimal symmetric N-->M cloning of coherent states is presented. Its implementation requires only a phase-insensitive linear amplifier and a network of beam splitters. An experimental demonstration of this continuous-variable cloner should therefore be in the scope of current technology. The link between optimal quantum cloning and optimal amplification of quantum states is also pointed out.
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