Experimental investigation of a coherent quantum measurement of the degree of polarization of a single mode light beam

Matthieu Legre , Mark Wegmuller , Nicolas Gisin (Group of Applied Physics , University of Geneva , Switzerland)

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classification 🪐 quant-ph

keywords measurementcoherentdegreefirstmethodpolarizationquantumapplication

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A novel method for the direct measurement of the degree of polarization is described. It is one of the first practical implementations of a coherent quantum measurement, the projection on the singlet state. Our first results demonstrate the successful operation of the method. However, due to the nonlinear crystals used presently, its application is limited to spectral widths larger than ~8nm.

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Experimental investigation of a coherent quantum measurement of the degree of polarization of a single mode light beam

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