  We propose a novel dark matter detection method utilizing the excitation of
superconducting transmon qubits. Assuming the hidden photon dark matter of a
mass of $O(10)\ \mu{\rm eV}$, the classical wave-matter oscillation induces an
effective ac electric field via the small kinetic mixing with the ordinary
photon. This serves as a coherent drive field for a qubit when it is resonant,
evolving it from the ground state towards the first-excited state. We evaluate
the rate of such evolution and observable excitations in the measurements, as
well as the search sensitivity to the hidden photon dark matter. For a selected
mass, one can reach $\epsilon \sim 10^{-12}-10^{-14}$ (where $\epsilon$ is the
kinetic mixing parameter of the hidden photon) with a single standard transmon
qubit. A simple extension to the frequency-tunable SQUID-based transmon enables
the mass scan to cover the whole $4-40\ \mu{\rm eV}$ ($1-10$ GHz) range within
a reasonable length of run time. The sensitivity scalability along the number
of the qubits also makes it a promising platform in accord to the rapid
evolution of the superconducting quantum computer technology.
