A 2D Spin-Valley Qubit for Quantum Computing and Sensing

The race is now on to develop the world's first universal fault tolerant quantum computer. Such a system represents a disruptive technology that will revolutionize human society. Quantum computers can solve complex problems that are intractable even for the fastest supercomputers today, and will have profound applications in diverse fields such as finance, logistics, drug development, material design, aerospace and many more. However, most leading candidates today are built with conventional materials. Recently developed quantum materials such as 2D materials, as a result of their extreme geometry, can possess intrinsic quantum properties not found in classical bulk counterparts. Such quantum materials may be even more suitable for developing quantum technologies such as a quantum computer.
In this project, we will look to develop a 2D spin-valley qubit, a fundamental component of a quantum computer that exploits the unique spin-valley physics found in 2D systems. We will look to fabricate and study such a prototype device based on electrostatic defined quantum dot structures in 2D van der Waals heterostructures. We will then attempt to exploit the unique physics in such systems, such as the spin-valley coupling, to realise qubit operations. Students will have access to state-of-the-art nanofabrication cleanroom facilities, material characterization, and low-temperature measurement systems including dilution refrigerators that can reach millikelvin temperatures.