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 relative phase is the mean phase value of the diffraction gratings. This encoding result to be more compact, less expensive and use the photons more efficiently.
Highlights
Quantum systems are the information carriers in quantum information processing and computing protocols
We present a proof of principle demonstration of a method for preparing arbitrary pure states of such systems by using a single phase-only spatial light modulator (SLM)
The method relies on the encoding of the complex transmission function corresponding to a given spatial qudit state, onto a preset diffraction order of a phase-only grating function addressed at the SLM
Summary
Quantum systems are the information carriers in quantum information processing and computing protocols. We present a proof of principle demonstration of a method for preparing arbitrary pure states of such systems by using a single phase-only spatial light modulator (SLM).
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