168 citations · 2k across the 70 of their papers we have counts for
71 papers
Dismantling the Stoquastic Dichotomy
Armen Karakashian, Itay Hen
We challenge the notion that a stoquastic binary governs fundamental computational boundaries in quantum computing and classical simulation of quantum systems. We argue that vanish…
A simple quantum simulation algorithm with near-optimal precision scaling
Amir Kalev, Itay Hen
Quantum simulation is a foundational application for quantum computers, projected to offer insights into complex quantum systems beyond the reach of classical computation. However,…
Feynman path integrals for discrete-variable systems: Walks on Hamiltonian graphs
Amir Kalev, Itay Hen
We propose a natural, parameter-free, discrete-variable formulation of Feynman path integrals. We show that for discrete-variable quantum systems, Feynman path integrals take the f…
Accounting for gauge symmetries in CHSH experiments
David H. Oaknin, Amir Kalev, Itay Hen
We re-examine the CHSH experiment, which we abstract here as a multi-round game played between two parties with each party reporting a single binary outcome at each round. We explo…
Exploiting Maximally Mixed States for Spectral Estimation by Time Evolution
Kaelyn J. Ferris, Zihang Wang, Itay Hen +3
We introduce a novel approach for estimating the spectrum of quantum many-body Hamiltonians, and more generally, of Hermitian operators, using quantum time evolution. In our approa…
A quantum Monte Carlo algorithm for Bose-Hubbard models on arbitrary graphs
Itay Hen, Emre Akaturk
We propose a quantum Monte Carlo algorithm capable of simulating the Bose-Hubbard model on arbitrary graphs, obviating the need for devising lattice-specific updates for different…