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Quantum radar

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arxiv 1905.02672 v1 pith:YKZ7X7OQ submitted 2019-05-07 quant-ph

Lorenzo Maccone , Changliang Ren This is my paper · ORCID
classification quant-ph
keywords localizationphotonsquantumspatialachieveachieveddegreesdirection
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We propose a quantum metrology protocol for the localization of a non-cooperative point-like target in three-dimensional space, by illuminating it with electromagnetic waves. It employs all the spatial degrees of freedom of N entangled photons to achieve an uncertainty in localization that is sqrt(N) times smaller for each spatial direction than what could be achieved by N independent photons.

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  1. Robust quantum metrology with explicit symmetric states

    quant-ph 2019-08 conditional novelty 6.0 of 10

    Explicit symmetric 'gnu' probe states from permutation-invariant codes provably retain Heisenberg scaling of quantum Fisher information under a constant number of erasure errors or a single dephasing error.

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