  The Landauer principle sets a lower bound on the thermodynamic cost of qubit
reset, which is only attainable for the quasistatic process. In this Letter, we
explore the collective advantage of qubit reset of coherent qubits in three
aspects. First, for the quasistatic process, the thermodynamic cost of
collective reset is remarkably lower than parallel reset because of the reduced
Hilbert space dimension due to entanglement effects. Second, for the
finite-time qubit reset, we prove that the error probability fades away and
per-qubit heat production tends the Landauer bound for initially continuous
protocols in the thermodynamic limit. Third, we show that qubit reset
performance enhances with the increase in the number of qubits. Our results,
illustrated by different protocols, provide a blueprint for future quantum
device fabrication.
