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Chirality and the angular momentum of light

Cameron, Robert P. and Goette, Jörg B. and Barnett, Stephen M. and Yao, Alison M. (2017) Chirality and the angular momentum of light. Philosophical Transactions A: Mathematical, Physical and Engineering Sciences, 375 (2087). ISSN 1364-503X

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Chirality is exhibited by objects that cannot be rotated into their mirror images. It is far from obvious that this has anything to do with the angular momentum of light, which owes its existence to rotational symmetries. There is nevertheless a subtle connection between chirality and the angular momentum of light. We demonstrate this connection and, in particular, its significance in the context of chiral light-matter interactions.