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Open Quantum Systems Decoherence
Weak Measurements Beyond the Aharonov-Albert-Vaidman Formalism
arXiv
Authors: Shengjun Wu, Yang Li
Year
2010
Paper ID
10981
Status
Preprint
Abstract Read
~2 min
Abstract Words
90
Citations
N/A
Abstract
We extend the idea of weak measurements to the general case, provide a complete treatment and obtain results for both the regime when the pre-selected and post-selected states (PPS) are almost orthogonal and the regime when they are exactly orthogonal. We surprisingly find that for a fixed interaction strength, there may exist a maximum signal amplification and a corresponding optimum overlap of PPS to achieve it. For weak measurements in the orthogonal regime, we find interesting quantities that play the same role that weak values play in the non-orthogonal regime.
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- This paper contributes to the Open Quantum Systems & Decoherence research area in the Quantum Articles archive.
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- We extend the idea of weak measurements to the general case, provide a complete treatment and obtain results for both the regime when the pre-selected and post-selected states...
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