Variational quantum Gibbs state preparation with a truncated Taylor series

Y Wang, G Li, X Wang - Physical Review Applied, 2021 - APS
The preparation of a quantum Gibbs state is an essential part of quantum computation and
has wide-ranging applications in various areas, including quantum simulation, quantum …

The ghost in the radiation: Robust encodings of the black hole interior

I Kim, E Tang, J Preskill - Journal of High Energy Physics, 2020 - Springer
A bstract We reconsider the black hole firewall puzzle, emphasizing that quantum error-
correction, computational complexity, and pseudorandomness are crucial concepts for …

Quantum pseudoentanglement

S Aaronson, A Bouland, B Fefferman, S Ghosh… - arxiv preprint arxiv …, 2022 - arxiv.org
Entanglement is a quantum resource, in some ways analogous to randomness in classical
computation. Inspired by recent work of Gheorghiu and Hoban, we define the notion of" …

Depth-efficient proofs of quantumness

Z Liu, A Gheorghiu - Quantum, 2022 - quantum-journal.org
A proof of quantumness is a type of challenge-response protocol in which a classical verifier
can efficiently certify the $\textit {quantum advantage} $ of an untrusted prover. That is, a …

Computational Entanglement Theory

R Arnon-Friedman, Z Brakerski, T Vidick - arxiv preprint arxiv:2310.02783, 2023 - arxiv.org
We initiate a rigorous study of computational entanglement theory, inspired by the emerging
usefulness of ideas from quantum information theory in computational complexity. We define …

Space-bounded quantum state testing via space-efficient quantum singular value transformation

FL Gall, Y Liu, Q Wang - arxiv preprint arxiv:2308.05079, 2023 - arxiv.org
Driven by exploring the power of quantum computation with a limited number of qubits, we
present a novel complete characterization for space-bounded quantum computation, which …

Variational approach to quantum state tomography based on maximal entropy formalism

R Gupta, M Sajjan, RD Levine, S Kais - Physical Chemistry Chemical …, 2022 - pubs.rsc.org
Quantum state tomography is an integral part of quantum computation and offers the starting
point for the validation of various quantum devices. One of the central tasks in the field of …

Public-key pseudoentanglement and the hardness of learning ground state entanglement structure

A Bouland, B Fefferman, S Ghosh, T Metger… - arxiv preprint arxiv …, 2023 - arxiv.org
Given a local Hamiltonian, how difficult is it to determine the entanglement structure of its
ground state? We show that this problem is computationally intractable even if one is only …

Quantum simulation of cosmic inflation

J Liu, YZ Li - Physical Review D, 2021 - APS
In this paper, we generalize Jordan-Lee-Preskill, an algorithm for simulating flat-space
quantum field theories, to 3+ 1 dimensional inflationary spacetime. The generalized …

Nonlocality under Computational Assumptions

G Gluch, K Barooti, A Gheorghiu… - Proceedings of the 56th …, 2024 - dl.acm.org
Nonlocality and its connections to entanglement are fundamental features of quantum
mechanics that have found numerous applications in quantum information science. A set of …