collaborators

10 papers

quant-ph2026

Filtered Quantum Phase Estimation

Gwonhak Lee, Minhyeok Kang, Jungsoo Hong +2

Accurate state preparation is a critical bottleneck in many quantum algorithms, particularly those for ground-state energy estimation. Even in fault-tolerant quantum computing, pre…

quant-ph2026

Quantum Circuit Representation of Combinatorial Matrix Functions

Minhyeok Kang, Gwonhak Lee, Youngrong Lim +1

Permanents, hafnians, and loop-hafnians are combinatorial matrix functions closely related to perfect matchings in graphs. These matrix functions arise in the quantum amplitudes of…

quant-ph2026

Efficient Multi-Controlled Gate Implementation in Trapped-Ion Systems

Minhyeok Kang, Taejin Kim, Jungsoo Hong +1

Multi-controlled gates are essential primitives in quantum algorithms, yet implementing them via standard gate-level decompositions remains resource-intensive. We develop efficient…

quant-ph2026

Finite Imaginary-Time Evolution for Polynomial Unconstrained Binary Optimization

Jaehee Kim, Juhyeon Kim, Gwonhak Lee +4

Imaginary-time evolution is a standard primitive for ground-state preparation but is nonunitary, precluding direct quantum implementation. We develop Finite Imaginary-Time Evolutio…

quant-ph2026

Heralded Linear Optical Generation of Dicke States

Minhyeok Kang, Jaehee Kim, William J. Munro +2

Entanglement is a fundamental feature of quantum mechanics and a key resource for quantum information processing. Among multipartite entangled states, Dicke states

quant-ph2025

Quadratically Shallow Quantum Circuits for Hamiltonian Functions

Youngjun Park, Minhyeok Kang, Chae-Yeun Park +1

Many quantum algorithms for ground-state preparation and energy estimation require the implementation of high-degree polynomials of a Hamiltonian to achieve better convergence rate…