Synchronization of qubit ensembles under optimized π -pulse driving
S. V. Remizov, D. S. Shapiro, Alexey N. Rubtsov · Physical Review A · 2015
We propose a technique of a simultaneous excitation of disordered qubits providing an effective suppression of inhomogeneous broadening in their spectral density. The technique is based on applying of an optimally chosen $\ensuremath{\pi}$ pulse with a smooth nonrectangular shape. We study excitation dynamics of an off-resonant qubit subjected to a strong classical electromagnetic driving field with a large reference frequency and slow envelope. Within this solution we optimize the envelope to achieve a preassigned accuracy in qubit synchronization.