  Molecular chirality is conventionally understood as space-inversion-symmetry
breaking in the equilibrium structure of molecules. Less well known is that
achiral molecules can be made chiral through extreme rotational excitation.
Here, we theoretically demonstrate a clear strategy for generating
rotationally-induced chirality (RIC): An optical centrifuge rotationally
excites the phosphine molecule (PH$_3$) into chiral cluster states that
correspond to clockwise ($R$-enantiomer) or anticlockwise ($L$-enantiomer)
rotation about axes almost coinciding with single P-H bonds. Application of a
strong dc electric field during the centrifuge pulse favors the production of
one rotating enantiomeric form over the other, creating dynamically chiral
molecules with $permanently$ oriented rotational angular momentum. This
essential step toward characterizing RIC promises a fresh perspective on
chirality as a fundamental aspect of nature.
