  Both the electron transport-based qubits, implemented through double quantum
dots, and the sources of indistinguishable single-photons like self-assembled
quantum dots are strong candidates for the implementation of quantum
technologies, such as quantum computers and quantum repeaters. Here, we
demonstrate a reliable way of coupling these two types of qubits, uncovering
the possibility of controlling and reading out the population of the double
quantum dot via optical excitation. It is also showed that, in spite of the
decoherence mechanisms affecting the qubits, the entanglement between them is
achievable and, consequently, the implementation of the suggested system in
quantum technologies is feasible.
