Terra Quantum Reports Room-Temperature Superconductivity, Potentially Enhancing Qubit Stability for Quantum Computing

January 25, 2024

ST. GALLEN, Switzerland, Jan. 25, 2024 – Terra Quantum, a leading quantum technology company, published in Advanced Quantum Technologies journal the first-ever observation of room-temperature superconductivity, Global Room-Temperature Superconductivity in Graphite.

The research led by Valerii Vinokur and Yakov Kopelevich, with co-authors from the Universidade Estadual de Campinas, University of Perugia, and SwissScientific Technologies, could be a significant breakthrough in superconductivity.

Markus Pflitsch, Terra Quantum founder and CEO, said: “Imagine power grids almost free of energy loss, revolutionizing our approach to electricity transmission. In healthcare, enhanced MRI technologies will emerge, offering unprecedented diagnostic precision. Transportation will leap forward with energy-efficient, high-speed magnetically levitating trains. Electronics will enter a new era of miniaturization and power efficiency.”

Pyrolytic graphite is a manufactured form of graphite. Researchers team at Universidade Estadual de Campinas, led by Prof. Kopelevich, used scotch tape to cleave this graphite into thin sheets. These sheets were covered by dense arrays of wrinkles in nearly parallel lines. The geometry of these wrinkles causes electrons to pair up into structures that allow superconducting currents to flow along the wrinkles.

The mechanism leading to superconductivity along the one-dimensional defects has been explained by C. A. Trugenberger, M. C. Diamantini, and V. M. Vinokur. Strain fluctuations within these defects can be described by effective topological gauge fields, which mediate an attractive potential causing electrons within droplets in the defects to pair up and Bose condense. The very thin dimension of these droplets leads to a very robust ground state for these pairs.

The condensate droplets form an effective Josephson junction array on the surface of graphite, which freezes in its topological Bose metal state, with residual conduction on the edges formed by the defects. On these defects, quantum phase slips typically cause dissipation. However, because of dimensional soldering with the two-dimensional surface and the three-dimensional bulk, quantum phase slips are just the tips of bulk vortices moving on the surface. Because of the very small resistance of the bulk, the motion of these vortices is suppressed, together with quantum-phase-slips-induced dissipation on the defects. So, these defects turn superconducting.

“The emerging field of quantum computing will benefit enormously since the qubits that now operate only at 10–20 mK can come to room temperature functioning. Thus, the things that were viewed as futuristic dreams have become a reality,” added Prof. Vinokur.

About Terra Quantum

Terra Quantum Group is a leading quantum technology company based in Germany and Switzerland. It provides “Quantum as a Service (QaaS)” in three core areas, the first one being “Quantum Algorithms as a Service.” Here, customers are provided access to an extensive library of algorithms, such as hybrid quantum optimization and hybrid quantum neural networks, which can be used for solving complex logistics problems or pattern recognition, among other things. Terra Quantum also develops new quantum algorithms for its customers or adapts existing algorithms to their specific needs. Secondly, through “Quantum Computing as a Service,” Terra Quantum offers its customers access to its proprietary high-performance simulated quantum processing units (QPU), the quantum ecosystem’s physical QPUs, while also developing native QPUs. The third division is “Quantum Security as a Service,” through which Terra Quantum offers its unique solutions for secure quantum and post quantum communications worldwide.


Source: Terra Quantum

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