Quantum Fisher Information from Randomized Measurements

The quantum Fisher information (QFI) is a fundamental quantity of interest in many areas from quantum metrology to quantum information theory. It can in particular be used as a witness to establish the degree of multiparticle entanglement in quantum many-body systems. In this work, we use polynomial...

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Bibliographic Details
Published in:Physical review letters 2021-12, Vol.127 (26), p.260501, Article 260501
Main Authors: Rath, Aniket, Branciard, Cyril, Minguzzi, Anna, Vermersch, Benoît
Format: Article
Language:English
Subjects:
Physics
Quantum Physics
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