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Herbert Walther

Researcher at Max Planck Society

Publications -  420
Citations -  19872

Herbert Walther is an academic researcher from Max Planck Society. The author has contributed to research in topics: Laser & Photon. The author has an hindex of 69, co-authored 419 publications receiving 18792 citations. Previous affiliations of Herbert Walther include Ludwig Maximilian University of Munich & Sofia University.

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Quantum theory of the mazer. II. Extensions and experimental considerations

TL;DR: In this article, the quantum theory of the mazer is extended by giving exact analytical solutions for a smooth potential and comparing them with the mesa potential considered earlier, leading to interesting features such as a state-changing or state-preserving mirror for atoms.
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Feynman’s approach to negative probability in quantum mechanics

TL;DR: In this paper, the authors introduce the concept of negative probability in the context of Young's double-slit experiment and in doing so shed a new light on the problem and emphasize that negative probability yields useful insight into the EPR problem.
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Quantum theory of the mazer. III. Spectrum

TL;DR: In this article, the spectrum of the micromaser with quantized motion of the pump atoms is calculated in different velocity regimes and the authors present approximate analytical results for the spectrum that allow a comparison with the exact numerical calculations.
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Nonclassical interference effects in the radiation from coherently driven uncorrelated atoms

TL;DR: In this article, the existence of nonclassical correlations in the radiation of two atoms, that are coherently driven by a continuous laser source, was demonstrated, and the correlations are induced by state reduction due to the measurement process when the detection of the photons does not distinguish between the atoms.