Quantum Throughput: Quantifying quantum communication with homodyne measurements

Details Quantum Throughput: Quantifying quantum communication with homodyne measurements Quantum Throughput: Quantifying quantum communication with homodyne measurements

2010-05-19

arxiv.org/abs/1005.3380v2

Phys. Rev. A 82, 052331 (2010)

Physics

Quantum Physics

9 pages, 3 figures. v2: minor modifications, results unchanged

Scientific paper

10.1103/PhysRevA.82.052331

Quantum communication relies on optical implementations of channels, memories and repeaters. In the absence of perfect devices, a minimum requirement on real-world devices is that they preserve quantum correlations, meaning that they have some thoughput of a quantum mechanical nature. Previous work has verified throughput in optical devices while using minimal resources. We extend this approach to the quantitative regime. Our method is illustrated in a setting where the input consists of two coherent states while the output is measured by two homodyne measurement settings.

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