Publication: Research - peer-review › Journal article – Annual report year: 2012
We present a probabilistic cloning scheme operating independently of any phase reference. The scheme is based solely on a phase-randomized displacement and photon counting, omitting the need for nonclassical resources and nonlinear materials. In an experimental implementation, we employ the scheme to clone coherent states from a phase covariant alphabet and demonstrate that the cloner is capable of outperforming the hitherto best-performing deterministic scheme. An analysis of the covariances between the output states shows that uncorrelated clones can be approached asymptotically. This simultaneously demonstrates how the effect of loss on coherent states can be compensated via noiseless preamplification.
|Journal||Physical Review A (Atomic, Molecular and Optical Physics)|
©2012 American Physical Society
|Citations||Web of Science® Times Cited: 6|
- Mathematical models, Physics, Cloning
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