Quantum-enhanced measurements without entanglement

D Braun, G Adesso, F Benatti, R Floreanini… - Reviews of Modern …, 2018 - APS
Quantum-enhanced measurements exploit quantum mechanical effects for increasing the
sensitivity of measurements of certain physical parameters and have great potential for both …

A free energy principle for generic quantum systems

C Fields, K Friston, JF Glazebrook, M Levin - Progress in Biophysics and …, 2022 - Elsevier
Abstract The Free Energy Principle (FEP) states that under suitable conditions of weak
coupling, random dynamical systems with sufficient degrees of freedom will behave so as to …

Toward a classification of mixed-state topological orders in two dimensions

TD Ellison, M Cheng - PRX Quantum, 2025 - APS
The classification and characterization of topological phases of matter is well understood for
ground states of gapped Hamiltonians that are well isolated from the environment. However …

Entanglement in indistinguishable particle systems

F Benatti, R Floreanini, F Franchini, U Marzolino - Physics Reports, 2020 - Elsevier
For systems consisting of distinguishable particles, there exists an agreed upon notion of
entanglement which is fundamentally based on the possibility of addressing individually …

Ruling out real-valued standard formalism of quantum theory

MC Chen, C Wang, FM Liu, JW Wang, C Ying… - Physical Review Letters, 2022 - APS
Standard quantum theory was formulated with complex-valued Schrödinger equations,
wave functions, operators, and Hilbert spaces. Previous work attempted to simulate quantum …

Factoring 2048-bit rsa integers in 177 days with 13 436 qubits and a multimode memory

É Gouzien, N Sangouard - Physical review letters, 2021 - APS
We analyze the performance of a quantum computer architecture combining a small
processor and a storage unit. By focusing on integer factorization, we show a reduction by …

Monitored quantum dynamics and the Kitaev spin liquid

A Lavasani, ZX Luo, S Vijay - Physical Review B, 2023 - APS
Quantum circuit dynamics with local projective measurements can realize a rich spectrum of
entangled states of quantum matter. Motivated by the physics of the Kitaev quantum spin …

Quantum Shannon theory with superpositions of trajectories

G Chiribella, H Kristjánsson - Proceedings of the …, 2019 - royalsocietypublishing.org
Shannon's theory of information was built on the assumption that the information carriers
were classical systems. Its quantum counterpart, quantum Shannon theory, explores the …

Quantum concepts in optical polarization

AZ Goldberg, P De La Hoz, G Björk… - Advances in Optics …, 2021 - opg.optica.org
We comprehensively review the quantum theory of the polarization properties of light. In
classical optics, these traits are characterized by the Stokes parameters, which can be …

Stabilizer formalism for operator quantum error correction

D Poulin - Physical review letters, 2005 - APS
Operator quantum error correction is a recently developed theory that provides a
generalized and unified framework for active error correction and passive error avoiding …