Geometry of quantum phase transitions

A Carollo, D Valenti, B Spagnolo - Physics Reports, 2020 - Elsevier
In this article we provide a review of geometrical methods employed in the analysis of
quantum phase transitions and non-equilibrium dissipative phase transitions. After a …

[KİTAP][B] Quantum phase transitions in transverse field spin models: from statistical physics to quantum information

A Dutta, G Aeppli, BK Chakrabarti, U Divakaran… - 2015 - books.google.com
The transverse field Ising and XY models (the simplest quantum spin models) provide the
organising principle for the rich variety of interconnected subjects which are covered in this …

Continuous phase transition without gap closing in non-Hermitian quantum many-body systems

N Matsumoto, K Kawabata, Y Ashida, S Furukawa… - Physical review …, 2020 - APS
Contrary to the conventional wisdom in Hermitian systems, a continuous quantum phase
transition between gapped phases is shown to occur without closing the energy gap Δ in …

Quantum metrology and sensing with many-body systems

V Montenegro, C Mukhopadhyay, R Yousefjani… - arxiv preprint arxiv …, 2024 - arxiv.org
The main power of quantum sensors is achieved when the probe is composed of several
particles. In this situation, quantum features such as entanglement contribute in enhancing …

Modular many-body quantum sensors

C Mukhopadhyay, A Bayat - Physical Review Letters, 2024 - APS
Quantum many-body systems undergoing phase transitions have been proposed as probes
enabling beyond-classical enhancement of sensing precision. However, this enhancement …

Unsupervised identification of topological phase transitions using predictive models

E Greplova, A Valenti, G Boschung… - New Journal of …, 2020 - iopscience.iop.org
Abstract Machine-learning driven models have proven to be powerful tools for the
identification of phases of matter. In particular, unsupervised methods hold the promise to …

Identifying non-Hermitian critical points with the quantum metric

JF Ren, J Li, HT Ding, DW Zhang - Physical Review A, 2024 - APS
The geometric properties of quantum states are fully encoded by the quantum geometric
tensor. The real and imaginary parts of the quantum geometric tensor are the quantum …

Hamiltonian learning for quantum error correction

A Valenti, E van Nieuwenburg, S Huber… - Physical Review …, 2019 - APS
The efficient validation of quantum devices is critical for emerging technological
applications. In a wide class of use cases the precise engineering of a Hamiltonian is …

Multiparameter critical quantum metrology with impurity probes

G Mihailescu, A Bayat, S Campbell… - Quantum Science and …, 2024 - iopscience.iop.org
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Gauging quantum states: from global to local symmetries in many-body systems

J Haegeman, K Van Acoleyen, N Schuch, JI Cirac… - Physical Review X, 2015 - APS
We present an operational procedure to transform global symmetries into local symmetries
at the level of individual quantum states, as opposed to typical gauging prescriptions for …