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Field demonstration of distributed quantum sensing without post-selection

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Abstract

We demonstrate distributed quantum sensing in field and show the unconditional violation (without post-selection) of shot-noise limit up to 0.916 dB with the averaged heralding efficiency of 73.88% for the field distance of 240 m.

© 2021 The Author(s)

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Multiphoton quantum metrology without pre-and post-selected measurements

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