Dynamic framework for criticality-enhanced quantum sensing
- URL: http://arxiv.org/abs/2008.11381v2
- Date: Tue, 19 Jan 2021 11:12:33 GMT
- Title: Dynamic framework for criticality-enhanced quantum sensing
- Authors: Yaoming Chu, Shaoliang Zhang, Baiyi Yu, and Jianming Cai
- Abstract summary: Quantum criticality, as a fascinating quantum phenomenon, may provide significant advantages for quantum sensing.
We propose a framework for quantum sensing with a family of Hamiltonians that undergo quantum phase transitions.
It is expected to provide a route towards the implementation of criticality-enhanced quantum sensing.
- Score: 1.819932604590499
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Quantum criticality, as a fascinating quantum phenomenon, may provide
significant advantages for quantum sensing. Here we propose a dynamic framework
for quantum sensing with a family of Hamiltonians that undergo quantum phase
transitions (QPT). By giving the formalism of the quantum Fisher information
(QFI) for quantum sensing based on critical quantum dynamics, we demonstrate
its divergent feature when approaching the critical point. We illustrate the
basic principle and the details of experimental implementation using quantum
Rabi model. The framework is applicable to a variety of examples and does not
rely on the stringent requirement for particular state preparation or adiabatic
evolution. It is expected to provide a route towards the implementation of
criticality-enhanced quantum sensing.
Related papers
- Quantum decoherence from complex saddle points [0.0]
Quantum decoherence is the effect that bridges quantum physics to classical physics.
We present some first-principle calculations in the Caldeira-Leggett model.
We also discuss how to extend our work to general models by Monte Carlo calculations.
arXiv Detail & Related papers (2024-08-29T15:35:25Z) - Quantum coarsening and collective dynamics on a programmable quantum simulator [27.84599956781646]
We experimentally study collective dynamics across a (2+1)D Ising quantum phase transition.
By deterministically preparing and following the evolution of ordered domains, we show that the coarsening is driven by the curvature of domain boundaries.
We quantitatively explore these phenomena and further observe long-lived oscillations of the order parameter, corresponding to an amplitude (Higgs) mode.
arXiv Detail & Related papers (2024-07-03T16:29:12Z) - Quantum data learning for quantum simulations in high-energy physics [55.41644538483948]
We explore the applicability of quantum-data learning to practical problems in high-energy physics.
We make use of ansatz based on quantum convolutional neural networks and numerically show that it is capable of recognizing quantum phases of ground states.
The observation of non-trivial learning properties demonstrated in these benchmarks will motivate further exploration of the quantum-data learning architecture in high-energy physics.
arXiv Detail & Related papers (2023-06-29T18:00:01Z) - Enhancement of Quantum Sensing in a Cavity Optomechanical System around
Quantum Critical Point [3.0770434477273647]
We present a quantum phase transition in the coupling cavity-mechanical oscillator system when the coupling strength crosses a critical point, determined by the effective detuning of cavity and frequency of mechanical mode.
This result provides an alternative method to enhance the quantum sensing of some physical quantities, such as mass, charge, and weak force, in a large mass system.
arXiv Detail & Related papers (2023-03-29T06:37:30Z) - Universality of critical dynamics with finite entanglement [68.8204255655161]
We study how low-energy dynamics of quantum systems near criticality are modified by finite entanglement.
Our result establishes the precise role played by entanglement in time-dependent critical phenomena.
arXiv Detail & Related papers (2023-01-23T19:23:54Z) - Critical quantum sensing based on the Jaynes-Cummings model with a
squeezing drive [6.284204043713657]
Quantum sensing improves the accuracy of measurements of relevant parameters by exploiting the unique properties of quantum systems.
In this work, we explore an alternative to construct the analog of the QRM for the sensing, exploiting the criticality appearing in the Jaynes-Cummings (JC) model whose bosonic field is parametrically driven.
arXiv Detail & Related papers (2022-12-21T04:40:34Z) - Efficient criteria of quantumness for a large system of qubits [58.720142291102135]
We discuss the dimensionless combinations of basic parameters of large, partially quantum coherent systems.
Based on analytical and numerical calculations, we suggest one such number for a system of qubits undergoing adiabatic evolution.
arXiv Detail & Related papers (2021-08-30T23:50:05Z) - Quantum Federated Learning with Quantum Data [87.49715898878858]
Quantum machine learning (QML) has emerged as a promising field that leans on the developments in quantum computing to explore large complex machine learning problems.
This paper proposes the first fully quantum federated learning framework that can operate over quantum data and, thus, share the learning of quantum circuit parameters in a decentralized manner.
arXiv Detail & Related papers (2021-05-30T12:19:27Z) - Quantum information spreading in a disordered quantum walk [50.591267188664666]
We design a quantum probing protocol using Quantum Walks to investigate the Quantum Information spreading pattern.
We focus on the coherent static and dynamic disorder to investigate anomalous and classical transport.
Our results show that a Quantum Walk can be considered as a readout device of information about defects and perturbations occurring in complex networks.
arXiv Detail & Related papers (2020-10-20T20:03:19Z) - Probing the Universality of Topological Defect Formation in a Quantum
Annealer: Kibble-Zurek Mechanism and Beyond [46.39654665163597]
We report on experimental tests of topological defect formation via the one-dimensional transverse-field Ising model.
We find that the quantum simulator results can indeed be explained by the KZM for open-system quantum dynamics with phase-flip errors.
This implies that the theoretical predictions of the generalized KZM theory, which assumes isolation from the environment, applies beyond its original scope to an open system.
arXiv Detail & Related papers (2020-01-31T02:55:35Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.