ICFO seminar: Enantio – Specific Unidirectional Harmonic Emission: the Chiral Double slit Experiment

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By Andrés Ordoñez, Max Born Institute, Berlin

Hosted by Prof Maciej Lewenstein (ICFO)


Structured light – light exhibiting non-trivial intensity, phase, and polarization patterns – has applications ranging from imaging and 3D micro-manipulation to classical and quantum communication. However, to date, its application to molecular chirality has been fundamentally limited by the weakness of the magnetic-dipole interaction. Locally chiral light – light tracing a chiral Lissajous figure – bypasses this limitation and allows efficient chiral light-matter interaction at the electric-dipole level.

In this talk it will be shown that, by structuring light’s local chirality, efficient enantio-specific control of the emission angle of harmonics in a chiral medium can be achieved. This phenomenon, which can be understood as a chiral extension of Young’s double slit experiment, exposes the immense potential of sculpting light’s local chirality to control the molecular response, and offers novel opportunities for efficient chiral discrimination and imaging on ultrafast time scales.


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