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Factoring and Fourier Transformation with a Mach-Zehnder Interferometer

Johann Summhammer
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Abstract

The scheme of Clauser and Dowling (Phys. Rev. A 53, 4587 (1996)) for factoring $N$ by means of an N-slit interference experiment is translated into an experiment with a single Mach-Zehnder interferometer. With dispersive phase shifters the ratio of the coherence length to wavelength limits the numbers that can be factored. A conservative estimate permits $N \approx 10^7$. It is furthermore shown, that sine and cosine Fourier coefficients of a real periodic function can be obtained with such an interferometer.

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Johann Summhammer. 1997-08-29. Factoring and Fourier Transformation with a Mach-Zehnder Interferometer. https://doi.org/10.1103/physreva.56.4324

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