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EPJ D - Reshaping Quantum Light

EPJ D - Reshaping Quantum Light

A photon is not a point: its wavepacket stretches out in space. In the classical limit, this spatial profile is governed by Maxwell's equations, and reshaping it has been a goal in optics since Galileo's invention of the telescope. In this paper, Morizur and his colleagues describe a new Unitary Programmable Mode Converter, a device capable of changing the spatial shape of quantum light at will without introducing loss in the beam.

Losses are particularly detrimental in quantum science because they destroy the non-classical nature of a beam with a well ordered flux of photons. The authors tested their device on such a beam of photons, successfully reshaping the wavepacket while retaining the non-classical nature of the flux. By efficiently adapting the spatial shape of the light emitted from a quantum light source, this device paves the way for the use of non-classical light to enhance optical measurements and microscopy.

Click here to read the full paper, "Spatial reshaping of a squeezed state of light" by J.-F. Morizur, S. Armstrong, N. Treps, J. Janousek and H.-A. Bachor, Eur. Phys. J. D 61, 237-239 (2011).

Paolo Biscari
The authors wish to thank the anonymous reviewers for their helpful comments and suggestions. They are also grateful to EPJP for their corrections pertaining to the English language.

E. Tala-Tebue, University of Dschang, Bandjoun, Cameroon

ISSN: 2190-5444 (Electronic Edition)

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