2023
DOI: 10.48550/arxiv.2302.06880
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Entanglement Survives Most Measurements

Abstract: To prepare quantum states and extract information, it is often assumed that one can perform a perfectly projective measurement. Such measurements can achieve an uncorrelated system and environment. However, perfectly projective measurements can be difficult or impossible to perform. Using a sequence of weak measurements, we show that entanglement cannot be removed unless one of the measurement operators becomes perfectly projective through an extreme limiting process. Removing initial correlations and the scen… Show more

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