The DOE has awarded $1.5M over 3 years to fund the "Developing Higher-Dimensional Qudits toward Fault-Tolerant Quantum Computing" project. The team is led by OSU PI Marc Bockrath, Professor of Physics, who is collaborating with Shannon Harvey from SLAC and Fan Zhang from University of Texas, Dallas.
If successful, this program will advance the state of the art in engineering and controlling high-dimensional qudits in quantum dots, establishing a foundation for their broad potential in scalable quantum information processing.
Qubits are the fundamental building blocks of quantum circuits. Increasingly, higher-dimensional quantum systems with additional energy levels, known as qudits, are recognized as offering potential advantages over qubits for quantum information processing, including higher error tolerance, improved gate fidelity, reduced hardware and control overhead, and enhanced algorithmic efficiency. Solid-state platforms offer natural advantages for scalability and device miniaturization. Quantum dots, nanometer-scale regions of material that function as artificial atoms, have emerged as a leading solid-state approach for qubit realization.
This interdisciplinary team brings together world-leading expertise in nanofabrication, quantum transport, qubits, and the theory of quantum phenomena in diverse materials and mesoscopic devices. High-quality devices will be fabricated by Bockrath and shared with Harvey. Experimental studies of quantum dot transport and microwave qudit manipulation will be closely integrated with Zhang’s multiscale analytical and numerical modeling.