  We report on the first detection of pulsed radio emission from a radio pulsar
with the ALMA telescope. The detection was made in the Band-3 frequency range
(85-101 GHz) using ALMA in the phased-array mode developed for VLBI
observations. A software pipeline has been implemented to enable a regular
pulsar observing mode in the future. We describe the pipeline and demonstrate
the capability of ALMA to perform pulsar timing and searching. We also measure
the flux density and polarization properties of the Vela pulsar (PSR
J0835$-$4510) at mm-wavelengths, providing the first polarimetric study of any
ordinary pulsar at frequencies above 32 GHz. Finally, we discuss the lessons
learned from the Vela observations for future pulsar studies with ALMA,
particularly for searches near the supermassive black hole in the Galactic
Center, and the potential of using pulsars for polarization calibration of
ALMA.
