  Measurements of electron drift properties in liquid and gaseous xenon are
reported. The electrons are generated by the photoelectric effect in a
semi-transparent gold photocathode driven in transmission mode with a pulsed
ultraviolet laser. The charges drift and diffuse in a small chamber at various
electric fields and a fixed drift distance of 2.0 cm. At an electric field of
0.5 kV/cm, the measured drift velocities and corresponding temperature
coefficients respectively are $1.97 \pm 0.04$ mm/$\mu$s and
$(-0.69\pm0.05)$\%/K for liquid xenon, and $1.42 \pm 0.03$ mm/$\mu$s and
$(+0.11\pm0.01)$\%/K for gaseous xenon at 1.5 bar. In addition, we measure
longitudinal diffusion coefficients of $25.7 \pm 4.6$ cm$^2$/s and $149 \pm 23$
cm$^2$/s, for liquid and gas, respectively. The quantum efficiency of the gold
photocathode is studied at the photon energy of 4.73 eV in liquid and gaseous
xenon, and vacuum. These charge transport properties and the behavior of
photocathodes in a xenon environment are important in designing and calibrating
future large scale noble liquid detectors.
