Missing data outside the detector range: application to continuous variable entanglement verification and quantum cryptography
arXiv:1302.5087 · doi:10.1103/PhysRevA.88.042326
Abstract
In continuous-variable quantum information processing detectors are necessarily coarse grained and of finite range. We discuss how especially the latter feature is a bug and may easily lead to overoptimistic estimates of entanglement and of security, when missed data outside the detector range are ignored. We show that entropic separability or security criteria are much superior to variance-based criteria for mitigating the negative effects of this bug.
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Cited by in corpus (9)
- Position-Momentum Uncertainty Relations in the Presence of Quantum Memory
- Majorization approach to entropic uncertainty relations for coarse-grained observables
- Mutual Unbiasedness in Coarse-grained Continuous Variables
- Uncertainty Relations for coarse-grained measurements: an overview
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- Testing for entanglement with periodic coarse-graining
- Entropic uncertainty relations and the measurement range problem, with consequences for high-dimensional quantum key distribution
- Entropic uncertainty relations for mutually unbiased periodic coarse-grained observables resemble their discrete counterparts
- Periodic discretized continuous observables are neither continuous nor discrete