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6. Estimation of a quantum interaction parameter using weak measurements: Theory and experiment

Author

Marco Barbieri, Marcelo P. Almeida, Holger F. Hofmann, M. E. Goggin, Graduate School of Advanced Science of Matter, Hiroshima University, Physics Department, Truman State University, ARC Centre for Engineered Quantum Systems, University of Queensland [Brisbane], Laboratoire Charles Fabry / Optique Quantique, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS), Hofmann H., F, Goggin M., E, Almeida M., P, and Barbieri, Marco

Subjects
Physics, Quantum Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], FOS: Physical sciences, Experimental data, State (functional analysis), Flory–Huggins solution theory, 01 natural sciences, Atomic and Molecular Physics, and Optics, 010305 fluids & plasmas, Distribution (mathematics), [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph], Quantum mechanics, 0103 physical sciences, Weak measurement, Sensitivity (control systems), Quantum Physics (quant-ph), 010306 general physics, Quantum, Spin-½
Abstract

We investigate the estimation of a small interaction parameter from the outcomes of weak quantum measurements implemented by the interaction. The relation of weak values and sensitivity is explained and the different contributions of postselected results are identified using experimental data. The results show how weak values can be used to control the distribution of input state sensitivity between different postselected outcomes., Replace with the published version. Comments still welcome

Published
2012

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