For quantum materials research, UW-Madison physicist Tiancheng Song received a DOE Early Career Award.
DOE Early Career Research Program
Materials science and quantum computing have advanced with the DOE Early Career Research Program (ECRP) funding given to the University of Wisconsin–Madison Professor Tiancheng Song. This prestigious award, established in 2010, funds excellent young scientists to pursue high-risk, high-reward research that pushes modern physics.
Developing Upcoming Quantum Devices
The money will be used especially to support the Song Lab’s groundbreaking research into new superconductors made of two-dimensional (2D) materials. One of the main obstacles in the current race to create large-scale, functional quantum computers is the material limits of existing technologies. The goal of Professor Tiancheng Song’s research is to overcome these obstacles by creating next-generation quantum devices that take advantage of the special qualities of extremely thin materials.
A fundamental aspect of quantum information science is the creation of durable superconductors and superconducting electronics. From the development of superconducting qubits, the basic building blocks of quantum computers, to the investigation of topological qubits, these materials are crucial for a variety of applications.
The Potential of 2D Materials and vdW Heterostructures
The Tiancheng Song Lab is investigating the possibilities of van der Waals (vdW) heterostructures and 2D materials, going beyond traditional material systems. Held together by comparatively weak van der Waals interactions, these structures are made up of layers of materials that are one or a few atoms thick. A novel and incredibly flexible environment for creating new superconducting quantum devices is offered by this platform. We will find new vdW superconductors, create Josephson junctions, and design hybrid superconducting systems by utilizing the latest developments in 2D quantum materials,” Song said about the project’s course.
The ability to “tinker” with a substance’s electrical properties at the atomic level by stacking several 2D layers allows researchers to create materials that are not found in nature. The vdW platform’s high degree of precision is what draws quantum device architecture to it.
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Unlocking Topological Quantum Computation
Using these 2D superconductors to fabricate and study Josephson junctions is a major goal of the sponsored research. At these crucial points, a non-superconducting barrier separates two superconductors, permitting the passage of a “supercurrent.”
As a result of these 2D junction materials’ high crystalline content, Professor Tiancheng Song plans to study unusual Josephson effects. These materials may hold the “key” to opening up new possibilities in topological quantum computation because of their accuracy and purity.
Using “topological” phases of matter, topological quantum computation is a theoretical method to quantum computing. The objective is to develop qubits that are “protected” by their structure from external noise (decoherence), which could make them significantly more stable than the qubits found in existing quantum processors.
A Coordinated Future for Physics
Professor Tiancheng Song said he was excited to use recent advances in 2D materials and quantum information science to take advantage of their synergistic opportunities.
The UW–Madison Department of Physics has a history of quality, which is reflected in this honor. Research on velocity gradients and magnetic field structures, new analyses from the Dark Energy Survey about the expansion of the cosmos, and works on cultural heritage by the Bergmann group are just a few examples of the department’s many recent endeavors. At Argonne, physics major Val Díaz Moreno was an Open Quantum Initiative Fellow. This is just one example of how the department continues to support student achievement.
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Conclusion and Long-Term Impact
To keep the United States at the forefront of scientific innovation, the DOE Early Career Research Program continues to be an essential tool. The program is making an investment in the fundamental components that could eventually power the most sophisticated computer systems in the world by sponsoring Professor Song’s group.
The Song Lab puts UW-Madison at the forefront of the upcoming wave of quantum discoveries by concentrating on the extremely crystalline character of 2D superconductors and the fabrication of hybrid superconducting systems. The results of this study could serve as a template for the scalable, reliable quantum devices needed for the next century of technological development.
The Department of Physics’ 2014 archives show such scholarly contributions, suggesting a long history of high-quality academics. With DOE support, Professor Tiancheng Song can write a new chapter in this history.
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