  Quantum autoencoders allow for reducing the amount of resources in a quantum
computation by mapping the original Hilbert space onto a reduced space with the
relevant information. Recently, it was proposed to employ approximate quantum
adders to implement quantum autoencoders in quantum technologies. Here, we
carry out the experimental implementation of this proposal in the Rigetti cloud
quantum computer employing up to three qubits. The experimental fidelities are
in good agreement with the theoretical prediction, thus proving the feasibility
to realize quantum autoencoders via quantum adders in state-of-the-art
superconducting quantum technologies.
