researcher

Ruizhe Zhang

Simons Institute for the Theory of Computing

33 papers hereh-index 14693 citations39 works total

Matching runs newest-first, so older work may not be attached to this profile yet.

author position

sole author3
first author2
middle author7
last author21

Across the 33 of 33 papers where every author was matched, so the position is known.

fields

affiliations

Simons Institute for the Theory of Computing

same name

Ruizhe Zhang — 12 papers, h 6
Ruizhe Zhang — 7 papers, h 6
Ruizhe Zhang — 6 papers, h 3
Ruizhe Zhang — 4 papers, h 4
Ruizhe Zhang — 2 papers
Ruizhe Zhang — 2 papers, h 2

Either other researchers who publish under this name, or the same person where the external sources have not merged their records.

identity via Semantic Scholar / OpenAlex

activity

20192026

most citedQuantum algorithm for ground state energy estimation using circuit depth with exponentially improved dependence on precision

62 citations · 151 across the 25 of their papers we have counts for

collaborators

Showing 2026Show all

4 papers · 1 filter

quant-ph2026

Improved Upper and Lower Bounds for Quantum Convex-Body Volume Estimation

Ruizhe Zhang

Estimating the volume of a high-dimensional convex body is a fundamental problem in theoretical computer science. Given a quantum membership oracle for a convex body $K\subset\math…

cs.DS2026

Hit-and-Run Mixes as Fast as the Ball Walk

Ruizhe Zhang

Let $K \subset R^{n}$ be an isotropic convex body. We prove that the hit-and-run walk, started from any $M$ -warm distribution, reaches total-variation distance $ε$ f…

cs.DS2026

Optimal Extrapolation Bounds for Sparse Fourier Sums

Ruizhe Zhang

We prove a sharp extrapolation bound for $k$ -sparse Fourier sums with arbitrary real frequencies and no separation assumption. For every $g (t) = \sum_{j = 1}^{k} v_{j} e^{i λ_{j} t}$ with $λ_j\…

quant-ph2026

Overcoming the Lamb Shift in System-Bath Interaction Models via KMS Detailed Balance: High-Accuracy Thermalization with Time-Bounded Interactions

Hongrui Chen, Zhiyan Ding, Ruizhe Zhang

We investigate quantum thermal state preparation algorithms based on system-bath interactions and uncover a surprising phenomenon in the weak-coupling regime. We rigorously prove t…