Diagnostics of mixed-state topological order and breakdown of quantum memory

R Fan, Y Bao, E Altman, A Vishwanath - PRX Quantum, 2024 - APS
Topological quantum memory can protect information against local errors up to finite error
thresholds. Such thresholds are usually determined based on the success of decoding …

A short introduction to topological quantum computation

V Lahtinen, J Pachos - SciPost Physics, 2017 - scipost.org
This review presents an entry-level introduction to topological quantum computation--
quantum computing with anyons. We introduce anyons at the system-independent level of …

Uhlmann phase as a topological measure for one-dimensional fermion systems

O Viyuela, A Rivas, MA Martin-Delgado - Physical review letters, 2014 - APS
We introduce the Uhlmann geometric phase as a tool to characterize symmetry-protected
topological phases in one-dimensional fermion systems, such as topological insulators and …

Classification of topological insulators and superconductors out of equilibrium

M McGinley, NR Cooper - Physical Review B, 2019 - APS
We establish the existence of a topological classification of many-particle quantum systems
undergoing unitary time evolution. The classification naturally inherits phenomenology …

Chiral topological superconductors enhanced by long-range interactions

O Viyuela, L Fu, MA Martin-Delgado - Physical review letters, 2018 - APS
We study the phase diagram and edge states of a two-dimensional p-wave superconductor
with long-range hop** and pairing amplitudes. New topological phases and …

Nonadiabatic quantum optimization for crossing quantum phase transitions

A Grabarits, F Balducci, BC Sanders, A del Campo - Physical Review A, 2025 - APS
We consider the optimal driving of the ground state of a many-body quantum system across
a quantum phase transition in finite time. In this context, excitations caused by the …

Dissipative topological phase transition with strong system-environment coupling

W Nie, M Antezza, Y Liu, F Nori - Physical Review Letters, 2021 - APS
A primary motivation for studying topological matter regards the protection of topological
order from its environment. In this work, we study a topological emitter array coupled to an …

Observation of topological Uhlmann phases with superconducting qubits

O Viyuela, A Rivas, S Gasparinetti, A Wallraff… - npj Quantum …, 2018 - nature.com
Topological insulators and superconductors at finite temperature can be characterized by
the topological Uhlmann phase. However, a direct experimental measurement of this …

Dephasing-enhanced Majorana zero modes in two-dimensional and three-dimensional higher-order topological superconductors

LM Vasiloiu, A Tiwari, JH Bardarson - Physical Review B, 2022 - APS
The one-dimensional (1D) Kitaev model in the topological phase, with open boundary
conditions, hosts Majorana zero modes. These are fermion parity-odd operators that almost …

Optimal control of Majorana zero modes

T Karzig, A Rahmani, F von Oppen, G Refael - Physical Review B, 2015 - APS
Braiding of Majorana zero modes provides a promising platform for quantum information
processing, which is topologically protected against errors. Strictly speaking, however, the …