Exploring Quantum Error Correction Frontier with Programmable Atom Arrays

EECS + Physics Colloquium

Tuesday, December 12, 2023

Banatao Auditorium, 310 Sutardja Dai Hall
4:00 – 5:00 pm

 Youtube Webinar

Abstract

A broad effort is currently underway to develop quantum computers that can outperform classical counterparts for certain computational or simulation tasks. Suppressing errors is one of the central challenges for useful quantum computing, requiring quantum error correction for large-scale processing. In this talk, we will discuss the recent advances involving programmable, coherent manipulation of quantum systems based on neutral atom arrays excited into Rydberg states, allowing the control over several hundred qubits in two dimensions. In particular, we use this platform to explore quantum algorithms with encoded logical qubits and quantum error correction techniques. Using this logical processor with various types of error-correcting codes, we demonstrate that we can improve logical two-qubit gates by increasing code size, outperform physical qubit fidelities, create logical GHZ states, and perform computationally complex scrambling circuits using 48 logical qubits and hundreds of logical gates. These results herald the advent of early error-corrected quantum computation, enabling new applications and inspiring a shift in addressing both the challenges and opportunities that lay ahe

Biography

Mikhail Lukin received his Ph.D. degree from Texas A&M University in 1998. He has been a Professor of Physics at Harvard since 2004, where he is currently the Joshua and Beth Friedman University Professor and a co-Director of the Harvard Quantum Initiative in Science and Engineering. He is a fellow of the American Physical Society (APS), a fellow of the Optical Society of America (OSA), a fellow of the American Association for the Advancement of Science (AAAS) and a member of the National Academy of Sciences. His research is in the areas of quantum optics and quantum information science, aimed at controlling strongly interacting atomic, optical and solid-state systems, studying quantum dynamics of many-body systems and exploring novel applications in quantum computing, simulations, quantum communication and metrology. He has co-authored over 400 technical papers. His awards include the Alfred P. Sloan Fellowship, David and Lucile Packard Fellowship for Science and Engineering, NSF Career Award, Adolph Lomb Medal of the OSA, AAAS Newcomb Cleveland Prize, APS I.I.Rabi Prize, Vannevar Bush Faculty Fellowship, Julius Springer Prize for Applied Physics, Willis E. Lamb Award for Laser Science and Quantum Optics, Charles Hard Towns Medal of the OSA and Norman F. Ramsey Prize of APS.