  We study quasiparticle interference (QPI) in the Kitaev quantum spin liquid
(QSL) for electrons tunneling into the QSL. The local tunneling conductance
around a spin vacancy or localized vison reveals unique features associated
with fractionalized Majorana fermions, chargons, and visons. In certain
parameter regimes, the single-spinon density of states and momentum dispersion
can both be directly extracted from the tunneling conductance. Our results
suggest that QPI is a promising tool for identifying the Kitaev QSL and its
fractionalized excitations.
