Optimal cloning for finite distributions of coherent states
arXiv:quant-ph/0311114 · doi:10.1103/PhysRevA.69.042313
Abstract
We derive optimal cloning limits for finite Gaussian distributions of coherent states, and describe techniques for achieving them. We discuss the relation of these limits to state estimation and the no-cloning limit in teleportation. A qualitatively different cloning limit is derived for a single-quadrature Gaussian quantum cloner.
15 pages RevTeX, 6 figures eps, submitted to PRA
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- Coherent State Quantum Key Distribution Without Random Basis Switching
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- Optimal design and quantum benchmarks for coherent state amplifiers
- Quantum non-Gaussianity and secure quantum communication
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- Quantum enhancement of signal-to-noise ratio with a heralded linear amplifier
- Experimental continuous variable cloning of partial quantum information
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- Truly noiseless probabilistic amplification
- Optimal multicopy asymmetric Gaussian cloning of coherent states
- Efficient verification of bosonic quantum channels via benchmarking
- Optimal secure quantum teleportation of coherent states of light