2016/03/31 by Hossein Gholipour, H. Gholipour, Farid Shähandeh +1
Computer Science · Mathematics · Physics and Astronomy · #Beam splitter #Bell's theorem #Bipartite graph #Cold Atom Physics and Bose-Einstein Condensates #Discrete mathematics #Interferometry #Laser #Lossy compression #Mathematics #Multipartite entanglement #Physics #Quantum #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum entanglement #Quantum mechanics #Squashed entanglement #Statistical physics #Statistics #quant-ph
paper · pdf · doi:10.1103/physreva.93.062318
published as Phys. Rev. A 93 062318 (2016) · Closest to the published version: some typos are fixed, some references have been added, and proofs are extended a little bit
openalex publication_date 2016/06/16 · arxiv created 2016/06/28 · arxiv updated 2016/06/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We find a sufficient condition to imprint the single-mode bosonic phase-space nonclassicality onto a bipartite state as modal entanglement and vice versa using an arbitrary beam splitter. Surprisingly, the entanglement produced or detected in this way depends only on the nonclassicality of the marginal input or output states, regardless of their purity and separability. In this way, our result provides a sufficient condition for generating entangled states of arbitrary high temperature and arbitrary large number of particles. We also study the evolution of the entanglement within a lossy Mach-Zehnder interferometer and show that unless both modes are totally lost, the entanglement does not diminish.