Atomic interactions for qubit-error compensation

Experimental imperfections induce phase and population errors in quantum systems. We present a method to compensate unitary affecting also the of qubit states. This is achieved through interaction target with an additional control qubit. show that our approach works well for single-photon two-photon excitation schemes. In first case, we study two reduced models (i) two-level system which corresponds effective level shift (ii) three-level one describing qubits Bell triplet subspace. second instead, double-STIRAP process presented comparable compensation efficiency respect case.