  We consider an experimentally feasible setup to demonstrate the existence and
coherent dynamics of Majorana fermion. The transport setup consists of a
quantum dot and a tunnel-coupled semiconductor nanowire which is anticipated to
generate Majorana excitations under some conditions. For transport under finite
bias voltage, we find that a subtraction of the source and drain currents can
expose the essential feature of the Majorana fermion, including the zero-energy
nature by gate-voltage modulating the dot level. Moreover, coherent oscillating
dynamics of the Majorana fermion between the nanowire and the quantum dot is
reflected in the shot noise via a spectral dip together with a pronounced
zero-frequency noise enhancement effect. Important parameters, e.g. for the
Majorana's mutual interaction and its coupling to the quantum dot, can be
extracted out in experiment using the derived analytic results.
