**Summary **

Mesoscopic systems provide a new tool for quantum systems design. In particular, they are enabling of robust quantum control. Here “mesoscopic system” refers to a connected network where each element, if studied alone, would be a quantum bit. The network is too big to be treated fully quantum mechanically. We do not have individual control over each element and we measure collective properties of the network. However, the network retains quantum coherence and behaves in a uniquely quantum fashion. In this project, we design a novel protocol using an intermediate mesoscopic system to control and interconnect non-interacting qubits. Our method aims to create entanglement between two separated qubits; a pure quantum correlation between the target qubits that provides a measure of the mesoscopic system’s quantum capacity. Over the course of this project, we will develop new theory and experimental tools. Ultimately, we expect our work will lead to innovative design elements for use in quantum processor architectures and quantum measurement devices.

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