John Preskill

John Preskill is an American theoretical physicist renowned for his foundational contributions to quantum information science and quantum computing. He is the Richard P. Feynman Professor of Theoretical Physics at the California Institute of Technology, where he also directs the Institute for Quantum Information and Matter. Preskill is widely credited with coining the term "quantum supremacy" and has made seminal advances in understanding quantum error correction and the black hole information paradox.

Early life and education

Born in Chicago, he developed an early interest in science and mathematics. He completed his undergraduate studies in physics at the University of Illinois Urbana-Champaign, earning a Bachelor of Science degree. For his graduate work, he attended Princeton University, where he was a student of Nobel laureate David Politzer, a key figure in the development of quantum chromodynamics. He received his Ph.D. in 1980 for research in theoretical particle physics.

Academic career

After holding a postdoctoral fellowship at Harvard University, he joined the faculty of the California Institute of Technology in 1983. He was appointed a full professor in 1990 and later named the Richard P. Feynman Professor of Theoretical Physics. At Caltech, he played a pivotal role in establishing the interdisciplinary Institute for Quantum Information and Matter, fostering collaboration between physicists, computer scientists, and engineers. He has also been a visiting scholar at institutions like the Kavli Institute for Theoretical Physics and the Perimeter Institute for Theoretical Physics.

Research contributions

Preskill's early research focused on particle physics and cosmology, including work on grand unified theories and the early universe. His interests shifted profoundly toward the emerging field of quantum information in the 1990s. He made crucial contributions to the theory of quantum error correction, which is essential for building fault-tolerant quantum computers. His work on topological quantum computation explored the use of anyons and topological order for robust information processing. He has also extensively studied the black hole information paradox, applying tools from quantum information theory to problems in quantum gravity.

Quantum information and quantum computing

Preskill is a leading voice in articulating the potential and challenges of quantum computing. He popularized the term "quantum supremacy" to describe the milestone where a quantum computer outperforms a classical computer on a specific task. His research group has produced influential work on quantum algorithms, quantum complexity theory, and noisy intermediate-scale quantum (NISQ) devices. Through his leadership at the Institute for Quantum Information and Matter, he has helped bridge the gap between theoretical concepts and experimental realizations in laboratories at Caltech and worldwide, including collaborations with Google Quantum AI and IBM Quantum.

Awards and honors

His contributions have been recognized with numerous prestigious awards. He received the Feynman Prize for Excellence in Teaching from Caltech in 2017. In 2018, he was awarded the Dirac Medal of the International Centre for Theoretical Physics. He was a co-recipient of the 2020 Breakthrough Prize in Fundamental Physics for foundational work in quantum information science. He is a fellow of the American Physical Society, the American Academy of Arts and Sciences, and a member of the National Academy of Sciences.

Personal life

Preskill is known as a dedicated mentor and educator, having supervised many graduate students and postdoctoral researchers who have become leaders in the field. An avid communicator of science, he maintains an active and widely read blog on quantum topics. He resides in Pasadena, California with his family.