Loss-tolerant state engineering for quantum-enhanced metrology via the reverse Hong-Ou-Mandel effect.

pmc-status-qastatus 0 pmc-status-live yes pmc-status-embargo no pmc-status-released yes pmc-prop-open-access yes pmc-prop-olf no pmc-prop-manuscript no pmc-prop-legally-suppressed no pmc-prop-has-pdf yes pmc-prop-has-supplement yes pmc-prop-pdf-only no pmc-prop-suppress-copyright no pmc-prop-is-real-version no pmc-prop-is-scanned-article no pmc-prop-preprint no pmc-prop-in-epmc yes pmc-license-ref CC BY In the current race towards the practical implementation of quantum techniques for information processing and communications, a strong trend is to design loss-tolerant quantum protocols, such as the preparation of non-local superpositions of quasi-classical light states 1 , discord-assisted remote state preparation 2 , quantum illumination 3 , undoing the effect of losses on continuous-variable entanglement 4 and the preparation of single-qubit entangled states over a long distance 5 6 7 8 .

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