Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Quantum Information Processing

Quantum metrology of accelerated atoms in spacetime with reflective boundaries

K. Berrada, Hichem Eleuch

Published May 18, 2026• 0 citations
Publisher
DOI
10.1007/s11128-026-05178-1

Related papers

Quantum metrology of phase for accelerated two-level atom coupled with electromagnetic field with and without boundary

Ying Hua Yang, Xiaobao Liu, Jieci Wang +1 more

Quantum Information Processing•Jan 27, 2018•14 citations

The Effect of Vacuum Fluctuations on Quantum Metrology for a Uniformly Accelerated Atom

Yao Jin

International Journal of Theoretical Physics•Dec 12, 2016•0 citations

Quantum Metrology with Atoms and Light

Karol Gietka

•May 20, 2019•0 citations

Quantum coherence of a circularly accelerated atom in a spacetime with a reflecting boundary

Wanhe Zhang, Xiaobao Liu, Tingli Yang +1 more

We investigate, in the paradigm of open quantum systems, the dynamics of quantum coherence of a circularly accelerated atom coupled to a bath of vacuum fluctuating massless scalar field in a spacetime with a reflecting boundary. The master equation that governs the system evolution is derived. Our results show that in the case without a boundary, the vacuum fluctuations and centripetal acceleration will always cause the quantum coherence to decrease. However, with the presence of a boundary, the quantum fluctuations of the scalar field are modified, which makes that quantum coherence could be enhanced as compared to that in the case without a boundary. Particularly, when the atom is very close to the boundary, although the atom still interacts with the environment, it behaves as if it were a closed system and quantum coherence can be shielded from the effect of the vacuum fluctuating scalar field.

Scientific Reports•Jul 22, 2022•6 citations

Fisher information as a probe of spacetime structure: relativistic quantum metrology in (A)dS

Haoxing Du, Robert B. Mann

A bstract Relativistic quantum metrology studies the maximal achievable precision for estimating a physical quantity when both quantum and relativistic effects are taken into account. We study the relativistic quantum metrology of temperature in (3+1)-dimensional de Sitter and anti-de Sitter space. Using Unruh-DeWitt detectors coupled to a massless scalar field as probes and treating them as open quantum systems, we compute the Fisher information for estimating temperature. We investigate the effect of acceleration in dS, and the effect of boundary condition in AdS. We find that the phenomenology of the Fisher information in the two spacetimes can be unified, and analyze its dependence on temperature, detector energy gap, curvature, interaction time, and detector initial state. We then identify estimation strategies that maximize the Fisher information and therefore the precision of estimation.

arXiv:2012.08557•Journal of High Energy Physics•May 1, 2021•24 citations

Quantum Metrology with Linear Optics

V. V. Zemlyanov, N. S. Kirsanov, Michael Romanovich Perelshtein +5 more

•Nov 8, 2018•0 citations
We investigate, in the paradigm of open quantum systems, the dynamics of quantum coherence of a circularly accelerated atom coupled to a bath of vacuum fluctuating massless scalar field in a spacetime with a reflecting boundary. The master equation that governs the system evolution is derived. Our results show that in the case without a boundary, the vacuum fluctuations and centripetal acceleration will always cause the quantum coherence to decrease. However, with the presence of a boundary, the quantum fluctuations of the scalar field are modified, which makes that quantum coherence could be enhanced as compared to that in the case without a boundary. Particularly, when the atom is very close to the boundary, although the atom still interacts with the environment, it behaves as if it were a closed system and quantum coherence can be shielded from the effect of the vacuum fluctuating scalar field.
A bstract Relativistic quantum metrology studies the maximal achievable precision for estimating a physical quantity when both quantum and relativistic effects are taken into account. We study the relativistic quantum metrology of temperature in (3+1)-dimensional de Sitter and anti-de Sitter space. Using Unruh-DeWitt detectors coupled to a massless scalar field as probes and treating them as open quantum systems, we compute the Fisher information for estimating temperature. We investigate the effect of acceleration in dS, and the effect of boundary condition in AdS. We find that the phenomenology of the Fisher information in the two spacetimes can be unified, and analyze its dependence on temperature, detector energy gap, curvature, interaction time, and detector initial state. We then identify estimation strategies that maximize the Fisher information and therefore the precision of estimation.