Nondeterministic Noiseless Linear Amplification of Quantum Systems

Understand

We introduce the concept of non-deterministic noiseless linear amplification.

• We propose a linear optical realization of this transformation that could be built with current technology.
• We discuss two applications; ideal probabilistic cloning of coherent states and distillation of continuous variable entanglement.
• For the latter example we demonstrate that highly pure entanglement can be distilled from transmission over a lossy channel.