(color online) (a) Sketch of the diode structure. The PMN-PT was cut in a way that it can exert large anisotropic strain fields on the bonded ELED. (b) Entanglement fidelity as a function of FSS. (c) Representative variation of FSS of the high-energy component of the exciton as a function of the strain tuning for five QDs. (d) Real part of the density matrix of the two-photon state.^[79]