Yi-Kai Liu

Yi-Kai Liu serves as an Adjunct Associate Professor at the University of Maryland Institute for Advanced Computer Studies and as a staff scientist at the National Institute of Standards and Technology (NIST) within the Applied and Computational Mathematics Division. He holds dual affiliation as a Fellow and adjunct professor at the NIST-UMD Joint Center for Quantum Information and Computer Science (QuICS), where he directed the NIST-side operations from 2020 to 2025. His academic appointments bridge federal research and higher education in quantum information science.

His educational background includes:

• BA in Mathematics, Princeton University
• PhD in Computer Science, UC San Diego
• Postdoctoral Research, Institute for Quantum Information at Caltech
• Postdoctoral Research, UC Berkeley

Liu's research centers on quantum computation with deep expertise in quantum algorithms, complexity theory, and quantum cryptography. He pioneers methods for quantum state tomography and characterization of experimental quantum devices (QCVV), while making foundational contributions to NIST's post-quantum cryptography standards. His secondary interests span machine learning applications, software-defined radio systems, and formal verification techniques for secure hardware/software design.

Analysis of his 15 most recent publications reveals concentrated advancement in quantum information theory, particularly quantum state reconstruction via compressed sensing, lattice-based cryptographic systems, and noise characterization in quantum hardware. His work consistently bridges theoretical computer science with experimental quantum device validation, demonstrating strong interdisciplinary impact across quantum algorithms, cryptographic security, and quantum metrology.

No specific scientific awards or fellowships are documented in the provided materials.

Liu actively participates in leadership roles including QuICS co-directorship and NIST standardization committees, though detailed grant histories remain unspecified. His academic advising focuses on quantum information students, with no current advisees publicly listed. He contributes to quantum education through QuICS graduate programs and postdoctoral opportunities.

He operates at the nexus of the Applied and Computational Mathematics Division at NIST and the Joint Center for Quantum Information and Computer Science (QuICS), driving collaborative research between federal scientists and university researchers. This dual affiliation positions him at the forefront of national quantum initiatives including the NSF Quantum Leap Challenge Institute for Robust Quantum Simulation.