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Standard and null weak values

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Publication date1/01/2014
Host publicationQuantum Theory: A Two-Time Success Story: Yakir Aharonov Festschrift the Global Financial Crisis and the Indian Economy
Place of PublicationMilan
PublisherSpringer-Verlag Milan
Number of pages11
ISBN (electronic)9788847052178
ISBN (print)9788847052161
<mark>Original language</mark>English


Weak value (WV) is a quantum mechanical measurement protocol, proposed by Aharonov, Albert, and Vaidman. It consists of a weak measurement, which is weighed in, conditional on the outcome of a later, strong measurement. Here we define another two-step measurement protocol, null weak value (NVW), and point out its advantages as compared to WV. We present two alternative derivations of NWVs and compare them to the corresponding derivations of WVs.