Time:12:10, Monday, May 25, 2026
Speaker: Prof. Chiao-Hsuan Wang
               Dept. of Physics, NTU
Title: Quantum Engineering for Analog Quantum Computation
Place : R36173, 1F, Dept. of Physics, Building of Science College, NCKU

Abstract:
Eigenvalue estimation is a central problem for demonstrating quantum advantage, yet its implementation on digital quantum computers is limited by circuit depth and operational overhead. To address these challenges, we present an analog quantum phase estimation (aQPE) protocol that extracts the eigenenergies of a target Hamiltonian through continuous time evolution and single-cavity readout. By encoding eigenvalue information as conditional cavity phase-space rotations, the scheme avoids deep quantum circuits and entangling gates, while enabling measurement with established cavity tomography. We further illustrate the feasibility of this approach with an implementation of aQPE for the XY model, whose ground-state energy problem is QMA-complete, within a physical architecture compatible with existing circuit quantum electrodynamics technology. These results demonstrate a resource-efficient and scalable framework for realizing quantum phase estimation on near-term platforms.