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 …

Multispin Clifford codes for angular momentum errors in spin systems

S Omanakuttan, JA Gross - Physical Review A, 2023 - APS
The physical symmetries of a system play a central role in quantum error correction. In this
work we encode a qubit in a collection of systems with angular momentum symmetry (spins) …

Optimal time for sensing in open quantum systems

ZH Saleem, A Shaji, SK Gray - Physical Review A, 2023 - APS
We study the time-dependent quantum Fisher information (QFI) in an open quantum system
satisfying the Gorini-Kossakowski-Sudarshan-Lindblad master equation. Most of our work …

Experimental distributed quantum sensing in a noisy environment

J Bate, A Hamann, M Canteri, A Winkler… - arxiv preprint arxiv …, 2025 - arxiv.org
The precision advantages offered by harnessing the quantum states of sensors can be
readily compromised by noise. However, when the noise has a different spatial function than …

Quantum-enhanced mean value estimation via adaptive measurement

K Wada, K Fukuchi, N Yamamoto - Quantum, 2024 - quantum-journal.org
Quantum-enhanced (ie, higher performance by quantum effects than any classical methods)
mean value estimation of observables is a fundamental task in various quantum …

Machine-learning-inspired quantum control in many-body dynamics

MY Mao, Z Cheng, L Li, N Wu, WL You - Physical Review A, 2024 - APS
Achieving precise preparation of quantum many-body states is crucial for the practical
implementation of quantum computation and quantum simulation. However, the inherent …

Estimating time in quantum chaotic systems and black holes

H Tang, S Vardhan, J Wang - arxiv preprint arxiv:2412.19885, 2024 - arxiv.org
We characterize new universal features of the dynamics of chaotic quantum many-body
systems, by considering a hypothetical task of" time estimation." Most macroscopic …

Covariant Quantum Error-Correcting Codes with Metrological Entanglement Advantage

CJ Lin, ZW Liu, VV Albert, AV Gorshkov - arxiv preprint arxiv:2409.20561, 2024 - arxiv.org
We show that a subset of the basis for the irreducible representations of the total $ SU (2) $
rotation forms a covariant approximate quantum error-correcting code with transversal $ U …

Selective and noise-resilient wave estimation with quantum sensor networks

A Hamann, P Aigner, P Sekatski, W Dür - arxiv preprint arxiv:2412.12291, 2024 - arxiv.org
We consider the selective sensing of planar waves in the presence of noise. We present
different methods to control the sensitivity of a quantum sensor network, which allow one to …

Enhanced quantum sensing mediated by a cavity in open systems

Q Langfitt, ZH Saleem, T Zhong, A Shaji… - arxiv preprint arxiv …, 2023 - arxiv.org
We simulate the dynamics of systems with $ N $= 1-20 qubits coupled to a cavity in order to
assess their potential for quantum metrology of a parameter in the open systems limit. The …