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Optical detection of fractional particle number in an atomic Fermi-Dirac gas

Juha Javanainen·Janne Ruostekoski
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Abstract

We study theoretically a Fermi-Dirac atomic gas in a one-dimensional optical lattice coupled to a coherent electromagnetic field with a topologically nontrivial soliton phase profile. We argue that the resulting fractional eigenvalues of the particle number operator can be detected via light scattering. This could be a truly quantum mechanical measurement of the particle number fractionalization in a dilute atomic gas.

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Juha Javanainen, Janne Ruostekoski. 2003-08-29. Optical detection of fractional particle number in an atomic Fermi-Dirac gas. https://doi.org/10.1103/physrevlett.91.150404

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