  A material with symmetry breaking inside can transmit the symmetry breaking
to its vicinity by vacuum electromagnetic fluctuations. Here, we show that
vacuum quantum fluctuations proximate to a parity-symmetry-broken material can
induce a chirality-dependent spectral shift of chiral molecules, resulting in a
chemical reaction process that favors producing one chirality over the other.
We calculate concrete examples and evaluate the chirality production rate with
experimentally realizable parameters, showing the promise of selecting
chirality with symmetry-broken vacuum quantum fluctuations.
