Seminar @UFF: Osvaldo J. Farías (CBPF), Friday Aug. 29th, 11 AM

Next Friday, August 29th, at 11 AM we’ll have a talk by Osvaldo Farías (CBPF) at our group meeting at IF-UFF. The talk’s title is “Quantum Information Processing by Weaving Quantum Talbot Carpets”, all are welcome to attend! Please see below for an abstract.

When: Friday August 29th, 11 AM, rooom A5-01, Physics Building (UFF)

Speaker: Osvaldo J. Farías (CBPF)

Title: Quantum Information Processing by Weaving Quantum Talbot Carpets

Abstract: Single photon interference due to the passage through a periodic grating is considered in a novel proposal for codifying D-dimensional qudits in the spatial degrees of freedom of light. Free space propagation naturally implements basic single qudit gates by means of the Talbot effect: an intricate time-space carpet of light in the near field of diffraction. Adding a diagonal phase gate, we show that a complete set of single qudit gates can be implemented. We then introduce a spatially-dependent beam splitter, which allows for measurement of the spatial qudits and implementation of controlled operations between two photons. A new form of universal quantum information processing can then be implemented with linear optics and ancilla photons.

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