Two-Step Enantio-selective Optical Switch

Abstract

We present an optical "enantio-selective switch", that, in two steps, turns a ("racemic") mixture of left-handed and right-handed chiral molecules into the enantiomerically pure state of interest. The optical switch is composed of an "enantio-discriminator" and an "enantio-converter" acting in tandem. The method is robust, insensitive to decay processes, and does not require molecular preorientation. We demonstrate the method on the purification of a racemate of (transiently chiral) D${}_2$S${}_2$ molecules, performed on the nanosecond timescale.

REVTEX4, 4 pages, 3 Postscript figures

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