Arkopal Dutt

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quant-ph2025

Learning stabilizer structure of quantum states

Srinivasan Arunachalam, Arkopal Dutt

We consider the task of learning a structured stabilizer decomposition of an arbitrary $n$ -qubit quantum state $∣ ψ ⟩$ : for $ε > 0$ , output a state $∣ ϕ ⟩$ with stabilizer-r…

quant-ph2024

Testing and learning structured quantum Hamiltonians

Srinivasan Arunachalam, Arkopal Dutt, Francisco Escudero Gutiérrez

We consider the problems of testing and learning an unknown $n$ -qubit Hamiltonian $H$ from queries to its evolution operator $e^{- i H t}$ under the normalized Frobenius norm. We prov…