Hi! I am Yiyi Cai, currently pursuing a MPhil in Advanced Computer Science at the University of Cambridge as a Gates-Cambridge Scholar, advised by Tom Gur. I am broadly interested in the interplay of theoretical computer science and quantum information, including quantum algorithms, coding theory, complexity theory, and cryptography. I hope to apply tools in TCS to discover relevant physical phenomena. Previously, I completed my B.S. in Electrical Engineering at Caltech. I am starting my PhD in Computer Science at Stanford University in Fall 2026, supported by the Stanford Graduate Fellowship.

Selected Work

High-Temperature Fermionic Gibbs States are Mixtures of Gaussian States
Akshar Ramkumar, Yiyi Cai, Yu Tong, Jiaqing Jiang
QIP 2026

Stochastic Error Cancellation in Analog Quantum Simulation
Yiyi Cai, Yu Tong, John Preskill
TQC 2024, Outstanding Paper Prize [talk]