Journal article ยท Preprint article
Optimally cloned binary coherent states
Binary coherent state alphabets can be represented in a two-dimensional Hilbert space. We capitalize this formal connection between the otherwise distinct domains of qubits and continuous variable states to map binary phase-shift keyed coherent states onto the Bloch sphere and to derive their quantum-optimal clones.
We analyze the Wigner function and the cumulants of the clones, and we conclude that optimal cloning of binary coherent states requires a nonlinearity above second order. We propose several practical and near-optimal cloning schemes and compare their cloning fidelity to the optimal cloner.
Language: | English |
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Publisher: | AMER PHYSICAL SOC |
Year: | 2017 |
Pages: | 12 |
ISSN: | 24699934 , 24699926 , 10941622 and 10502947 |
Types: | Journal article and Preprint article |
DOI: | 10.1103/PhysRevA.96.042311 |
ORCIDs: | Andersen, Ulrik Lund |