New Method for Air-Stable 2D Superconductors Enhances Quantum Device Scalability

• •New encapsulation epitaxy method enables stable growth of niobium diselenide superconductors.
• •The protective graphene layer allows for large-area production while preventing oxidation.
• •High kinetic inductance of the superconductors is beneficial for quantum circuit applications.

Researchers have developed a technique to create air-stable, ultrathin superconductors, specifically niobium diselenide, by growing it beneath a protective graphene layer. This encapsulation epitaxy method allows for the production of large-area superconductors that maintain their properties in air, overcoming previous challenges of rapid degradation. The superconductors exhibit high kinetic inductance, making them suitable for quantum circuits. This advancement could lead to more compact and efficient quantum devices, including superconducting quantum computing hardware and ultrasensitive detectors. The research was conducted by a team from MIT and other institutions and is published in Nature.