activity
20202026
most citedNon-trivial lower bound for 3-coloring the ring in the quantum LOCAL model

1 citations · 1 across the 9 of their papers we have counts for

collaborators

16 papers

quant-ph2026

Improved Separations between Quantum and Classical Communication Complexity of Total Functions

François Le Gall

We refine Gavinsky's framework (arXiv:2608.18784) for exponential separations between quantum and randomized communication complexity of total functions and obtain larger separatio…

quant-ph2026

Constant-round quantum advantage in communication complexity for total functions

Atsuya Hasegawa, François Le Gall

We show that there exists a total function for which there is a polynomial gap between the randomized and the constant-round quantum communication complexity. Previously, such a se…

quant-ph2026

An Entropy-Governed Speedup for Quantum Algorithms on Local Hamiltonians

Ranitha Mataraarachchi, François Le Gall, Suguru Tamaki

Low-energy estimation and state preparation for general -local Hamiltonians are fundamental challenges in quantum complexity theory. For constant relative accuracy, Buhrman et a…

quant-ph2026

Multi-Prover Interactive Proof Systems with Leakage

Vahid R. Asadi, Atsuya Hasegawa, François Le Gall

It is known that there exist multi-prover interactive protocols ( protocols) for the complexity class , succinct protocols for $\mathsf{…

quant-ph2026

Fine-Grained Complexity for Quantum Problems from Size-Preserving Circuit-to-Hamiltonian Constructions

Nai-Hui Chia, Atsuya Hasegawa, François Le Gall +1

The local Hamiltonian (LH) problem is the canonical -complete problem introduced by Kitaev. In this paper, we show its hardness in a very strong sense: we show that t…

cs.DS2025

A Simpler Exponential-Time Approximation Algorithm for MAX-k-SAT

Harry Buhrman, Sevag Gharibian, Zeph Landau +3

We present an extremely simple polynomial-space exponential-time -approximation algorithm for MAX-k-SAT that is (slightly) faster than the previous known polynomia…