  We propose and analyze an optically loaded quantum memory exploiting
capacitive coupling between self-assembled quantum dot molecules and
electrically gated quantum dot molecules. The self-assembled dots are used for
spin-photon entanglement, which is transferred to the gated dots for long-term
storage or processing via a teleportation process heralded by single-photon
detection. We illustrate a device architecture enabling this interaction and we
outline its operation and fabrication. We provide self-consistent
Poisson-Schroedinger simulations to establish the design viability and refine
the design, and to estimate the physical coupling parameters and their
sensitivities to dot placement. The device we propose generates heralded copies
of an entangled state between a photonic qubit and a solid-state qubit with a
rapid reset time upon failure. The resulting fast rate of entanglement
generation is of high utility for heralded quantum networking scenarios
involving lossy optical channels.
