Quantum Materials: Key to Advancing Quantum Computing by Enhancing Stability, Scalability, and Error Resistance through Superconductors, Topological Insulators, and 2D Materials for Scalable Systems

Quantum computing is poised to transform computational power by surpassing the limitations of traditional systems. Central to this evolution are quantum materials, which possess properties grounded in quantum mechanics and are essential for developing scalable, fault-tolerant quantum systems. This paper examines the pivotal role of quantum materials, including superconductors, topological insulators, two-dimensional (2D) materials, and spintronics, in the field. The first section examines the limitations of silicon in quantum applications, particularly in addressing quantum effects such as decoherence and electron tunneling that reduce its effectiveness at the quantum level. We then delve into the key characteristics that make quantum materials suitable for quantum systems, such as superconductivity, high electron mobility, coherence time, stability, noise resistance, and compatibility with existing semiconductor technologies. Emphasis is placed on topological insulators, which facilitate fault-tolerant quantum operations, as well as superconducting qubits, both of which are vital to the design of quantum circuits. Furthermore, the paper examines the promising potential of 2D materials and quantum dots for enhancing qubit performance and miniaturization. The integration of hybrid quantum materials, which combine the best features of various materials, is also explored, highlighting its potential for creating scalable and manufacturable quantum systems. Lastly, challenges associated with fabrication, scalability, and material stability are discussed, along with future directions and emerging innovations in quantum materials research, outlining a pathway toward commercial quantum processors and broader applications in quantum communication and cryptography.