Quantum coherence and distribution of N-partite bosonic fields in noninertial frame

Wu, Shu-Min; Zeng, Hao‐Sheng; Cao, Hui-Min

doi:10.1088/1361-6382/ac1b09

Cited by 28 publications

(25 citation statements)

References 36 publications

(62 reference statements)

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“…In this report we will examine the ability of a massive quantum field to generate or destroy coherence in a two-level Unruh-DeWitt (UDW) detector under an instantaneous interaction [41][42][43][44][45][46][47] (for a study of the coherence present in the field under a different context see [48][49][50][51]). To accomplish this we will determine the cohering and decohering power of the quantum evolution channel induced by the action of the field on the detector [52][53][54][55][56].…”

Section: Introductionmentioning

confidence: 99%

Cohering and decohering power of massive scalar fields under instantaneous interactions

Kollas¹,

Moustos²,

Muñoz³

2022

Preprint

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Employing a non-perturbative approach based on an instantaneous interaction between a twolevel Unruh-DeWitt detector and a massive scalar field, we investigate the ability of the field to generate or destroy coherence in the detector by deriving the cohering and decohering power of the induced quantum evolution channel. For a field in a coherent state a previously unnoticed effect is reported whereby the amount of coherence that the field generates displays a revival pattern with respect to the size of the detector. It is demonstrated that by including mass in a thermal field the set of maximally coherent states of the detector decoheres less compared to a zero mass. In both of the examples mentioned, by making a suitable choice of detector radius, field energy and coupling strength it is possible to infer the mass of the field by either measuring the coherence present in the detector in the case of an interaction with a coherent field or the corresponding decoherence of a maximally coherent state in the case of a thermal field. In view of recent advances in the study of Proca metamaterials, these results suggest the possibility of utilising the theory of massive electromagnetism for the construction of novel applications for use in quantum technologies.

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Section: Introductionmentioning

confidence: 99%

Cohering and decohering power of massive scalar fields under instantaneous interactions

Kollas¹,

Moustos²,

Muñoz³

2022

Preprint

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“…The two phenomena are closely related and the study of Unruh effect is helpful to understand the Hawking radiation, and to study the thermodynamics and the problem of information loss [10][11][12]. The Unruh effect and Hawking radiation have been extended to different fields, such as free scalar field, free Dirac field and so on [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29]. In general, quantum steering, quantum entanglement and quantum discord between quantum fields decrease with the increase of observer acceleration, which means that Unruh effect is harmful to quantum resources based on quantum fields.…”

Section: Introductionmentioning

confidence: 99%

Genuine multipartite entanglement subject to the Unruh and anti-Unruh effects

Zeng

Liu

2022

New J. Phys.

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We study the acceleration effect on the genuine tripartite entanglement for one or two accelerated detector(s) coupled to the vacuum field. Surprisingly, we find that the increase and decrease in entanglement have no definite correspondence with the Unruh and anti-Unruh effects. Specifically, Unruh effect can not only decrease but also enhance the tripartite entanglement between detectors; also, anti-Unruh effect can not only enhance but also decrease the tripartite entanglement. We give an explanation of this phenomenon. Finally, we extend the discussion from tripartite to N-partite systems.

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“…However, despite the long history of quantum coherence, it is recently that it has been quantified in a formal sense using the tools of quantum information theory [8]. This has led to a lot of new developments from the quantum measurement [9][10][11][12], the distribution of quantum coherence in multipartite systems [13][14][15][16][17], and the application of coherence in the characterization of quantum states and many-body systems [18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Dynamical dephasing of bipartite and tripartite quantum coherence of spin-1/2 XXZ Heisenberg model in a renormalization group approach

Fouokeng¹,

Nsangou²,

Fodouop³

et al. 2022

J. Phys. Commun.

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The dynamical dephasing of a bipartite and tripartite quantum coherence in spin-1/2 Heisenberg model, driven by an applied magnetic field, in the presence of Dzyaloshinskii-Moriya interaction is investigated. The system is renormalized through the Kadanoof’s blocks approach. It is observed for both bipartite and tripartite schemes that by increasing the size of the system, the quantum coherence measure show an abrupt change at a quantum critical point (QCP). A further increase of the Dzyaloshinskii-Moriya coupling parameter affect the QCP, causing the dynamical dephasing which is the signature of second order quantum phase transition. The displacement of the QCP reduces the Quantum coherence of the system and can be controlled by the external magnetic field strength. Moreover, in a given range of Dzyaloshinskii-Moriya interaction strength and magnetic field, the monogamous and polygamous nature of quantum coherence is related to the size of the system.

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Quantum coherence and distribution of N-partite bosonic fields in noninertial frame

Cited by 28 publications

References 36 publications

Cohering and decohering power of massive scalar fields under instantaneous interactions

Cohering and decohering power of massive scalar fields under instantaneous interactions

Genuine multipartite entanglement subject to the Unruh and anti-Unruh effects

Dynamical dephasing of bipartite and tripartite quantum coherence of spin-1/2 XXZ Heisenberg model in a renormalization group approach

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