This project addresses a key challenge in scaling semiconductor quantum dot (QD) qubits: spectral inhomogeneity and device variability. The proposed solution is a hybrid architecture that couples QDs via microcavity exciton-polaritons—light-matter quasiparticles that combine photon agility with exciton interactions. By engineering a polariton “information bus,” the research aims to enable:

• Fast, single-shot quantum non-demolition readout
• Universal single-qubit control
• High-fidelity two-qubit phase gates

The work spans device design, nanofabrication, cryogenic microscopy, and advanced optical spectroscopy. It will optimize cavity and material parameters for strong coupling, characterize qubit properties under hybridization, and implement robust gate protocols tolerant to inhomogeneity. The ultimate goal is to demonstrate polariton-mediated quantum logic, providing a practical route to scalable, photonics-ready quantum processors.