Quantum state control for future computing

The work, carried out in collaboration with researchers from Spain and China, was published in the prestigious scientific journal Nature Communications and presents an innovative method that uses quantum interference to manipulate the spin of titanium atoms, achieving operations in much shorter times than conventional techniques.

A step forward in the speed of quantum computing. The speed of quantum operations is a determining factor for the viability of future processors. The approach developed by the IMIT team, based on Landau-Zener-Stückelberg-Majorana quantum interference, enables completely electrical control by modulating the voltage generated by a scanning tunneling microscope. This advance not only accelerates coherent operations but also offers a promising way to overcome the challenge of decoherence, the phenomenon that destroys quantum information.

The theoretical group at IMIT and FaCENA is led by Dr. Alejandro Ferrón and composed of Dr. Sergio Gómez, Lic. Estefanía Rus, and Dr. Omar Osenda.

Upcoming Challenges: Molecular Protection of Quantum Bits The team is currently working on a second strategy to combat decoherence: modifying the atomic environment. In collaboration with the Swiss Federal Laboratory for Materials Science and Technology (Empa), they are designing hybrid molecular structures that support atoms, thereby protecting quantum information from the environment. This project recently received $25,000 in funding for the design of "Hybrid Molecular-Atomic Architectures for Scalable Atomic Quantum Bit Control."