Quantum correlations and coherence in a moving Unruh–deWitt detector

Bhuvaneswari, S.; Muthuganesan, R.; Radha, R.

doi:10.1016/j.physa.2022.127934

Cited by 2 publications

(3 citation statements)

References 40 publications

(44 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To analyze how the dynamics of entropy disorder and quantum correlation within a system are influenced by interacting with a massless scalar field and uniformly accelerating, a group of parameters has been established to explore the evolution process. The findings demonstrate that the noisy evolution of detectors under the effect of Unruh decoherence can produce quantum correlations, akin to the generation of entanglement and coherence reported in previous works [15,46]. In fact, the quantum correlations experience a resurgence with increasing Unruh temperature, particularly for certain initial state parameters of the detectors.…”

Section: Discussionsupporting

confidence: 68%

“…Additionally, the Unruh effect is a specific example of how vacuum fluctuations undergo parametric amplification [14]. This effect causes the detector to behave as if it is immersed in a thermal environment with a Unruh temperature T k 2 B = g p  that corresponds to its own proper acceleration γ, leading to decoherence and loss of the properties of the coupled Unruh-deWitt detectors [7,15,16]. The Unruh-deWitt detector model is commonly used to probe quantum fields in curved spacetime and investigate the implications for relativistic quantum information.…”

Section: Introductionmentioning

confidence: 99%

“…There has been recent interest in studying quantum phenomena like entanglement [37], quantum nonlocality [45], and coherence for Unruh-deWitt detectors [15,46,47]. In this study, we explore quantum correlations and entropy disorder between Unruh-deWitt detectors using the LQFI and quantum consonance as measures of quantum correlations and linear entropy as a measure of entropy disorder.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Entropy disorder and quantum correlations in two Unruh-deWitt detectors uniformly accelerating and interacting with a massless scalar field

Elghaayda,

Mansour

2023

Phys. Scr.

View full text Add to dashboard Cite

This investigation focuses on studying the dynamics of entropy disorder and quantum correlations between two detectors interacting with a scalar field in a four-dimensional Minkowski space-time using the Unruh-deWitt model. The aim is to gain insights into the evolution of quantum resources in uniformly accelerated detectors that interact with a massless scalar field. To achieve this, useful metrics such as local quantum Fisher information (LQFI), quantum consonance, and linear entropy are employed to analyze the quantum correlations and entropy disorder. The results indicate that the quantum correlations are heavily reliant on the choice of the initial state of the detectors. Interestingly, the quantum correlations exhibit a surprising resurgence as the Unruh temperature increases for specific initial state parameters. However, for other values, the Unruh temperature takes over and leads to a monotonic decrease in the quantum correlations. However, the degree of disorder is observed to increase as the Unruh temperature increases. Furthermore, the investigation delves into how the energy spacing of the detector affects quantum correlations across various initial state parameters. Further elucidating the behavior of quantum resources in curved space-time, we demonstrate that some initial state parameters can cause sudden changes in correlation measures as a function of energy spacing. These results highlight the relevance of choosing adequate initial state parameters, as they have a significant impact on the variation of quantum resources in two Unruh-deWitt detectors.

show abstract

Section: Discussionsupporting

confidence: 68%