In celebration of the International Year of Quantum Science and Technology in 2025, the American Physical Society has dedicated a special issue of PRX Quantum to commemorate 100 years of quantum mechanics. Volume 6, Issue 1 of 2025 titled “International Year of Quantum: Impacting the Next Decade,” seeks to explore and highlight groundbreaking work that promises to shape the future of quantum science. Among the contributors is CQIQC Postdoctoral Fellow Yuxuan Zhang, whose research provides new insights into the classical methods of simulating quantum circuits.
PRX Quantum, a highly selective journal, is dedicated to publishing cutting-edge research in quantum science and technology. As an open-access platform with significant visibility, it plays an important role in shaping the future of this field. This special issue reflects the journal’s dedication to celebrating the diversity and interdisciplinary nature of quantum science.
Yuxuan’s article, “Classical Simulability of Quantum Circuits with Shallow Magic Depth,” co-authored with Yifan Zhang, a graduate student advised by Sarang Gopalakrishnan at Princeton University, challenges conventional understandings of quantum computers and their relationship with classical computers. Quantum computers are known for solving problems that are incredibly difficult for classical computers, owing to their use of “magic gates” (T-gates for example). Their research suggests that “having a large number of magic gates is not enough to make a quantum computer powerful; their placement within the circuit is just as crucial.” It also offers new perspectives on factors that contribute to the power of quantum computers and, also, on how classical computers can remain competitive in specific situations.
Reflecting on this achievement, Yuxuan expressed his gratitude for the opportunity to be featured in such a landmark issue: “It is truly our great pleasure to be part of this special collection in such a historic year for quantum science. I am grateful to my amazing collaborator, Yifan, whose dedication and insight have been incredibly inspiring. I also extend my gratitude to PRX Quantum’s editors and reviewers for their constructive feedback and for providing young researchers like us with a platform to showcase our work. Last, but not least, I am deeply grateful for my advisors’ unwavering support and the nurturing environment at CQIQC, which has consistently encouraged me to pursue challenging problems.”
As the field moves into its second century, Yuxuan is motivated about the future of quantum computation, recognizing its potential to transform countless aspects of modern life:
“A revolution in quantum computation is on the verge—one that could potentially change the lives of billions. I am excited to be part of it!”
Yuxuan, a postdoctoral fellow affiliated with both the Department of Physics and the Vector Institute for Artificial Intelligence, works with Professors Yong-Baek Kim and Juan Felipe Carrasquilla. In this detailed interview, you can learn more about his career trajectory and his interest in how computers can enhance our understanding of physics.