Geometric phase of an accelerated two-level atom in the presence of a perfectly reflecting plane boundary

Zhai, Hua; Zhang, Jialin; Yu, Hongwei

doi:10.1016/j.aop.2016.05.017

Cited by 9 publications

(5 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[33] that the entanglement extraction can be enhanced for two UDW detectors in anti-parallel acceleration in comparison with those in inertial motion or parallel acceleration. On the other hand, it has been demonstrated that the presence of boundaries in flat spacetime, which changes the spacetime topology and causes modification of fluctuations of quantum fields [41], brings new features to novel quantum effects associated acceleration, such as the Casimir-Polder interaction [42][43][44], the modified radiative properties of accelerated atoms [45][46][47], the geometric phase [48] and the modified entanglement dynamics [49,50].…”

Section: Introductionmentioning

confidence: 99%

Entanglement harvesting in the presence of a reflecting boundary

Liu

Zhang

2021

J. High Energ. Phys.

Self Cite

View full text Add to dashboard Cite

We study, in the framework of the entanglement harvesting protocol, the entanglement harvesting of both a pair of inertial and uniformly accelerated detectors locally interacting with vacuum massless scalar fields subjected to a perfectly reflecting plane boundary. We find that the presence of the boundary generally degrades the harvested entanglement when two detectors are very close to the boundary. However, when the distance between detectors and the boundary becomes comparable to the interaction duration parameter, the amount of the harvested entanglement approaches a peak, which even goes beyond that without a boundary. Remarkably, the parameter space of the detectors’ separation and the magnitude of acceleration that allows entanglement harvesting to occur is enlarged due to the presence of the boundary. In this sense, the boundary plays a double-edged role on entanglement harvesting, degrading in general the harvested entanglement while enlarging the entanglement harvesting-achievable parameter space. A comparison of three different acceleration scenarios of the detectors with respect to the boundary, i.e., parallel, anti-parallel and mutually perpendicular acceleration, shows that the phenomenon of entanglement harvesting crucially depends on the acceleration, the separation between two detectors and the detectors’ distance from the boundary.

show abstract

Section: Introductionmentioning

confidence: 99%

Entanglement harvesting in the presence of a reflecting boundary

Liu

Zhang

2021

J. High Energ. Phys.

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, the validity of such results in other circumstances such as in curved spacetime or in the presence of boundaries merits further exploration. In fact, it has been recognized that the presence of reflecting boundaries in flat spacetime modifies the fluctuations of quantum fields, resulting in some intriguing quantum effects, such as the Casimir effect [26], the light-cone fluctuations [27], the geometric phase [28] and the modification for the radiative properties of accelerated atoms [29][30][31]. Since the dynamic evolution in time of the detectors system is strongly dependent on the fluctuations of quantum fields, modifications of the fields fluctuations caused by the presence of a boundary have been shown to play a significant role in controlling the entanglement creation in the detectors system [32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Harvesting correlations from vacuum quantum fields in the presence of a reflecting boundary

Liu,

Zhang,

2023

J. High Energ. Phys.

Self Cite

View full text Add to dashboard Cite

We explore correlations harvesting by two static detectors locally interacting with vacuum massless scalar fields in the presence of an infinite perfectly reflecting boundary. We study the phenomena of mutual information harvesting and entanglement harvesting for two detector-boundary alignments, i.e., parallel-to-boundary and orthogonal-to-boundary alignments. Our results show that the presence of the boundary generally inhibits mutual information harvesting relative to that in flat spacetime without any boundaries. In contrast, the boundary may play a doubled-edged role in entanglement harvesting, i.e., inhibiting entanglement harvesting in the near zone of the boundary while assisting it in the far zone of the boundary. Moreover, there exists an optimal detector energy gap difference between two nonidentical detectors that makes such detectors advantageous in correlations harvesting as long as the interdetector separation is large enough. The value of the optimal detector energy gap difference depends on both the interdetector separation and the detector-to-boundary distance. A comparison of the correlations harvesting in two different alignments shows that although correlations harvesting share qualitatively the same properties, they also display quantitative differences in that the detectors in orthogonal-to-boundary alignment always harvest comparatively more mutual information than the parallel-to-boundary ones, while they harvest comparatively more entanglement only near the boundary.

show abstract

“…[33] that the entanglement extraction can be enhanced for two UDW detectors in anti-parallel acceleration in comparison with those in inertial motion or parallel acceleration. On the other hand, it has been demonstrated that the presence of boundaries in flat spacetime, which changes the spacetime topology and causes modification of fluctuations of quantum fields [37], brings new features to novel quantum effects associated acceleration, such as the Casimir-Polder interaction [42][43][44], the modified radiative properties of accelerated atoms [45][46][47], the geometric phase [48] and the modified entanglement dynamics [49,50].…”

Section: Introductionmentioning

confidence: 99%

Entanglement harvesting in the presence of a reflecting boundary

Liu,

Zhang,

2021

Preprint

Self Cite

View full text Add to dashboard Cite

We study, in the framework of entanglement harvesting protocols, the entanglement harvesting of a pair of uniformly accelerated detectors locally interacting with vacuum massless scalar fields subjected to a perfectly reflecting plane boundary. We find that the presence of the boundary generally degrades the amount of the harvested entanglement when two detectors are very close to the boundary for all three acceleration scenarios of the detectors with respect to the boundary, i.e., parallel, anti-parallel and mutually perpendicular acceleration. However, when the distance between detectors and the boundary becomes comparable to the interaction duration parameter, the amount of harvested entanglement may approach a peak, which even goes beyond that without a boundary. Remarkably, the parameter space of the detectors' separation and the magnitude of acceleration that allows entanglement harvesting to occur is enlarged due to the presence of the boundary. In this sense, the boundary plays a double-edged role on entanglement harvesting, degrading in general the amount of entanglement while enlarging the harvesting-achievable parameter space. A comparison of three different acceleration scenarios shows that the phenomena of entanglement harvesting crucially depends on the magnitude of acceleration, the separation between two detectors and the detectors' distance from the boundary.

show abstract

Geometric phase of an accelerated two-level atom in the presence of a perfectly reflecting plane boundary

Cited by 9 publications

References 34 publications

Entanglement harvesting in the presence of a reflecting boundary

Entanglement harvesting in the presence of a reflecting boundary

Harvesting correlations from vacuum quantum fields in the presence of a reflecting boundary

Entanglement harvesting in the presence of a reflecting boundary

Contact Info

Product

Resources

About