Quantum

Quantum has published 1365 Papers in 8 Volumes, as well as 80 Views in Quantum Views.

Schrödinger as a Quantum Programmer: Estimating Entanglement via Steering

Aby Philip, Soorya Rethinasamy, Vincent Russo, and Mark M. Wilde,

Quantum 8, 1366 (2024).

Quantifying entanglement is an important task by which the resourcefulness of a quantum state can be measured. Here, we develop a quantum algorithm that tests for and quantifies the separabi…

Paper

Quantum Phase Transitions in periodically quenched systems

Á. Sáiz, J. Khalouf-Rivera, J. M. Arias, P. Pérez-Fernández, and J. Casado-Pascual,

Quantum 8, 1365 (2024).

Quantum phase transitions encompass a variety of phenomena that occur in quantum systems exhibiting several possible symmetries. Traditionally, these transitions are explored by continuously…

Paper

TensorKrowch: Smooth integration of tensor networks in machine learning

José Ramón Pareja Monturiol, David Pérez-García, and Alejandro Pozas-Kerstjens,

Quantum 8, 1364 (2024).

Tensor networks are factorizations of high-dimensional tensors into networks of smaller tensors. They have applications in physics and mathematics, and recently have been proposed as promisi…

Paper

Covariant operator bases for continuous variables

A. Z. Goldberg, A. B. Klimov, G. Leuchs, and L. L. Sanchez-Soto,

Quantum 8, 1363 (2024).

Coherent-state representations are a standard tool to deal with continuous-variable systems, as they allow one to efficiently visualize quantum states in phase space. Here, we work out an al…

Paper

NoRA: A Tensor Network Ansatz for Volume-Law Entangled Equilibrium States of Highly Connected Hamiltonians

Valérie Bettaque and Brian Swingle,

Quantum 8, 1362 (2024).

Motivated by the ground state structure of quantum models with all-to-all interactions such as mean-field quantum spin glass models and the Sachdev-Ye-Kitaev (SYK) model, we propose a tensor…

Paper

Learning t-doped stabilizer states

Lorenzo Leone, Salvatore F. E. Oliviero, and Alioscia Hamma,

Quantum 8, 1361 (2024).

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. The algorithm l…

Paper

Rigorous results on approach to thermal equilibrium, entanglement, and nonclassicality of an optical quantum field mode scattering from the elements of a non-equilibrium quantum reservoir

Stephan De Bievre, Marco Merkli, and Paul E. Parris,

Quantum 8, 1360 (2024).

Rigorous derivations of the approach of individual elements of large isolated systems to a state of thermal equilibrium, starting from arbitrary initial states, are exceedingly rare. This is…

Paper

Scalable, ab initio protocol for quantum simulating SU($N$)$\times$U(1) Lattice Gauge Theories

Federica Maria Surace, Pierre Fromholz, Francesco Scazza, and Marcello Dalmonte,

Quantum 8, 1359 (2024).

We propose a protocol for the scalable quantum simulation of SU($N$)$\times$U(1) lattice gauge theories with alkaline-earth like atoms in optical lattices in both one- and two-dimensional system…

Paper

Empirical Sample Complexity of Neural Network Mixed State Reconstruction

Haimeng Zhao, Giuseppe Carleo, and Filippo Vicentini,

Quantum 8, 1358 (2024).

Quantum state reconstruction using Neural Quantum States has been proposed as a viable tool to reduce quantum shot complexity in practical applications, and its advantage over competing tech…

Paper

Enhanced entanglement in multi-bath spin-boson models

Charlie R. Hogg, Federico Cerisola, James D. Cresser, Simon A. R. Horsley, and Janet Anders,

Quantum 8, 1357 (2024).

The spin-boson model usually considers a spin coupled to a single bosonic bath. However, some physical situations require coupling of the spin to multiple environments. For example, spins in…

Paper

The Bethe Ansatz as a Quantum Circuit

Roberto Ruiz, Alejandro Sopena, Max Hunter Gordon, Germán Sierra, and Esperanza López,

Quantum 8, 1356 (2024).

The Bethe ansatz represents an analytical method enabling the exact solution of numerous models in condensed matter physics and statistical mechanics. When a global symmetry is present, the…

Paper

Precisely determining photon-number in real time

Leonardo Assis Morais, Till Weinhold, Marcelo Pereira de Almeida, Joshua Combes, Markus Rambach, Adriana Lita, Thomas Gerrits, Sae Woo Nam, Andrew G. White, and Geoff Gillett,

Quantum 8, 1355 (2024).

Superconducting transition-edge sensors (TES) are extremely sensitive microcalorimeters used as photon detectors with unparalleled energy resolution. They have found application from measuri…

Paper

A High Performance Compiler for Very Large Scale Surface Code Computations

George Watkins, Hoang Minh Nguyen, Keelan Watkins, Steven Pearce, Hoi-Kwan Lau, and Alexandru Paler,

Quantum 8, 1354 (2024).

We present the first high performance compiler for very large scale quantum error correction: it translates an arbitrary quantum circuit to surface code operations based on lattice surgery.…

Paper

Resource Marginal Problems

Chung-Yun Hsieh, Gelo Noel M. Tabia, Yu-Chun Yin, and Yeong-Cherng Liang,

Quantum 8, 1353 (2024).

We introduce the $\textit{resource marginal problems}$, which concern the possibility of having a resource-free target subsystem compatible with a $given$ collection of marginal density matrices…

Paper

Relaxations and Exact Solutions to Quantum Max Cut via the Algebraic Structure of Swap Operators

Adam Bene Watts, Anirban Chowdhury, Aidan Epperly, J. William Helton, and Igor Klep,

Quantum 8, 1352 (2024).

The Quantum Max Cut (QMC) problem has emerged as a test-problem for designing approximation algorithms for local Hamiltonian problems. In this paper we attack this problem using the algebrai…

Paper

Magic of quantum hypergraph states

Junjie Chen, Yuxuan Yan, and You Zhou,

Quantum 8, 1351 (2024).

Magic, or nonstabilizerness, characterizes the deviation of a quantum state from the set of stabilizer states, playing a fundamental role in quantum state complexity and universal fault-tole…