Rachbauer, L. M. (2022, November 16). The Quantum Wigner-Smith Operator: Micromanipulation, Metrology and Vacuum Forces [Presentation]. Seminar Advances in Quantum Science and Quantum Technology, Hörsaal Atominstitut Wien, Austria.
We introduce the quantum Wigner-Smith (QWS) operator, a Hermitian operator describing the interaction between the spatial as well as the quantum degrees of freedom of light and a local classical parameter of a linear, but otherwise arbitrarily complex scattering medium through which the light propagates. The QWS operator builds a bridge between quantum micromanipulation, vacuum forces and quantum metrology on the one side, and the formalism of classical scattering matrices, which are experimentally measurable in a noninvasive manner, on the other side. We show how to design protocols for optimal micromanipulation as well as for optimal parameter estimation by shaping both the spatial and the quantum degrees of freedom of light. Also, the forces of the quantum vacuum naturally emerge from the formalism.
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Research facilities:
Vienna Scientific Cluster
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Project title:
Wellenkontrolle in Systemen mit Absorption und Unordnung: P 32300-N27 (Fonds zur Förderung der wissenschaftlichen Forschung (FWF))
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Research Areas:
Photonics: 50% Quantum Metrology and Precision Measurements: 50%
