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Distributed Quantum Metrology with Linear Networks and Separable Inputs
We derive a bound on the ability of a linear-optical network to estimate a linear combination of independent phase shifts by using an arbitrary nonclassical but unentangled input state, thereby elucidating the quantum resources required to obtain the Heisenberg limit with a multiport interferometer....
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| Publicado no: | Phys Rev Lett |
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| Main Authors: | , , , , |
| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado em: |
2018
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| Assuntos: | |
| Acesso em linha: | https://ncbi.nlm.nih.gov/pmc/articles/PMC6467277/ https://ncbi.nlm.nih.gov/pubmed/30095935 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1103/PhysRevLett.121.043604 |
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