A survey on the complexity of learning quantum states

A Anshu, S Arunachalam - Nature Reviews Physics, 2024 - nature.com
Quantum learning theory is a new and very active area of research at the intersection of
quantum computing and machine learning. Important breakthroughs in the past two years …

Exponential learning advantages with conjugate states and minimal quantum memory

R King, K Wan, JR McClean - PRX Quantum, 2024 - APS
The ability of quantum computers to directly manipulate and analyze quantum states stored
in quantum memory allows them to learn about aspects of our physical world that would …

[PDF][PDF] Learning shallow quantum circuits

HY Huang, Y Liu, M Broughton, I Kim, A Anshu… - Proceedings of the 56th …, 2024 - dl.acm.org
Despite fundamental interests in learning quantum circuits, the existence of a
computationally efficient algorithm for learning shallow quantum circuits remains an open …

Learning t-doped stabilizer states

L Leone, SFE Oliviero, A Hamma - Quantum, 2024 - quantum-journal.org
In this paper, we present a learning algorithm aimed at learning states obtained from
computational basis states by Clifford circuits doped with a finite number $ t $ of $ T $-gates …

Efficient learning of quantum states prepared with few non-clifford gates

S Grewal, V Iyer, W Kretschmer, D Liang - arxiv preprint arxiv:2305.13409, 2023 - arxiv.org
We give a pair of algorithms that efficiently learn a quantum state prepared by Clifford gates
and $ O (\log n) $ non-Clifford gates. Specifically, for an $ n $-qubit state $|\psi\rangle …

Pseudorandom unitaries are neither real nor sparse nor noise-robust

T Haug, K Bharti, DE Koh - arxiv preprint arxiv:2306.11677, 2023 - arxiv.org
Pseudorandom quantum states (PRSs) and pseudorandom unitaries (PRUs) possess the
dual nature of being efficiently constructible while appearing completely random to any …

[PDF][PDF] A little magic means a lot

A Gu, L Leone, S Ghosh, J Eisert, S Yelin… - arxiv preprint arxiv …, 2023 - drive.google.com
Notions of so-called magic quantify how non-classical quantum states are in a precise
sense: low values of magic preclude quantum advantage; they also play a key role in …

Efficient learning of -doped stabilizer states with single-copy measurements

NH Chia, CY Lai, HH Lin - Quantum, 2024 - quantum-journal.org
One of the primary objectives in the field of quantum state learning is to develop algorithms
that are time-efficient for learning states generated from quantum circuits. Earlier …

Learning the stabilizer group of a Matrix Product State

G Lami, M Collura - arxiv preprint arxiv:2401.16481, 2024 - arxiv.org
We present a novel classical algorithm designed to learn the stabilizer group--namely the
group of Pauli strings for which a state is a $\pm 1$ eigenvector--of a given Matrix Product …

A note on polynomial-time tolerant testing stabilizer states

S Arunachalam, S Bravyi, A Dutt - arxiv preprint arxiv:2410.22220, 2024 - arxiv.org
We show an improved inverse theorem for the Gowers-$3 $ norm of $ n $-qubit quantum
states $|\psi\rangle $ which states that: for every $\gamma\geq 0$, if the $\textsf …