Intrinsic Entanglement Degradation by Multi-Mode Detection
arXiv:quant-ph/0404029 · doi:10.1103/PhysRevA.70.023808
Abstract
Relations between photon scattering, entanglement and multi-mode detection are investigated. We first establish a general framework in which one- and two-photon elastic scattering processes can be discussed, then we focus on the study of the intrinsic entanglement degradation caused by a multi-mode detection. We show that any multi-mode scattered state cannot maximally violate the Bell-CHSH inequality because of the momentum spread. The results presented here have general validity and can be applied to both deterministic and random scattering processes.
12 pages, 4 figures, v3: minor changes. Phys. Rev. A (2004), to be published
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