Preparing arbitrary pure states of spatial qudits with a single phase-only spatial light modulator

JJM Varga, M. A. SolĂ­s-Prosser, L. Rebon, Augusto Arias, L. Neves, C. Iemmi and S Ledesma
JOURNAL OF PHYSICS: CONFERENCE SERIES 605, 1 (2015)

ABSTRACT

We present a new method for preparing multidimensional spatial qudits by means
of a single phase-only spatial light modulator (SLM). This method improves previous ones
that use two SLMs, one working in amplitude regime and the other in phase regime. To that
end, we addressed diffraction gratings on the slits that define the state and then we
performed a spatial filtering in the Fourier plane. The amplitude of the coefficients of the
quantum state are determined by the modulation deep of the diffraction gratings, and the nd the relative phase is the
mean phase value of the difraction gratings. This encoding result to be more compact, less expensive and use the photons more eficiently.

DOI: http://dx.doi.org/



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