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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…

Quantum Physics · Physics 2021-09-01 Zhihong Liu , Jialin Zhang , Hongwei Yu

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…

Quantum Physics · Physics 2023-11-28 Zhihong Liu , Jialin Zhang , Hongwei Yu

We study the extraction of quantum coherence by three static Unruh-DeWitt (UDW) detectors that interact locally with a massless scalar vacuum field in the vicinity of an infinite perfectly reflecting boundary. Depending on the setup, the…

Quantum Physics · Physics 2026-01-30 Shu-Min Wu , Xiao-Ying Jiang , Xiang-Yue Yu , Zhihong Liu , Xiao-Li Huang

The quantum vacuum has long been known to be characterized by field correlations between spacetime points. These correlations can be swapped with a pair of particle detectors, modelled as simple two-level quantum systems (Unruh-DeWitt…

High Energy Physics - Theory · Physics 2020-10-29 Matthew P. G. Robbins , Laura J. Henderson , Robert B. Mann

Entanglement harvesting from the quantum field is a well-known fact that, in recent times, is being rigorously investigated further in flat and different curved backgrounds. The usually understood formulation studies the possibility of two…

General Relativity and Quantum Cosmology · Physics 2022-08-17 Dipankar Barman , Subhajit Barman , Bibhas Ranjan Majhi

We investigate the phenomenon of entanglement harvesting for a spacetime in quantum superposition, using two Unruh-DeWitt detectors interacting with a quantum scalar field where the spacetime background is modeled as a superposition of two…

General Relativity and Quantum Cosmology · Physics 2025-09-16 Anwesha Chakraborty , Lucas Hackl , Magdalena Zych

We study the properties of the transition probability for a circularly accelerated detector that interacts with the massless scalar fields in the presence of a reflecting boundary. As the trajectory radius increases, the transition…

Quantum Physics · Physics 2025-03-28 Runhu Li , Zixu Zhao

We study entanglement harvested from a quantum field through local interaction with Unruh-DeWitt detectors undergoing linear acceleration. The interactions allow entanglement to be swapped locally from the field to the detectors. We find an…

Quantum Physics · Physics 2017-10-19 Grant Salton , Robert B. Mann , Nicolas C. Menicucci

We study the phenomenon of entanglement extraction from the vacuum of a massless scalar field in $(1+1)$ dimensional spacetime in presence of a moving Dirichlet boundary condition, i.e. mirror spacetime, using two inertial Unruh-DeWitt…

Quantum Physics · Physics 2019-07-11 Wan Cong , Erickson Tjoa , Robert B. Mann

We explore whether acceleration assists entanglement harvesting for a pair of uniformly accelerated detectors in three different acceleration scenarios, i.e., parallel, anti-parallel and mutually perpendicular acceleration, both in the…

Quantum Physics · Physics 2022-04-22 Zhihong Liu , Jialin Zhang , Robert B. Mann , Hongwei Yu

In this paper, we explore correlation harvesting in quantum superposition, specifically focusing on the entanglement and mutual information extracted by two Unruh-DeWitt detectors interacting with a quantum field in a mass-superposed BTZ…

General Relativity and Quantum Cosmology · Physics 2026-02-10 Yu Tang , Wentao Liu , Zhilong Liu , Jieci Wang

We implement the entanglement harvesting protocol, in which two Unruh-DeWitt detectors become entangled through local interactions with a quantum field, for the first time in the vicinity of a black hole. Our study, focusing on the BTZ…

Motivated by the prospect of experimental implementations of entanglement harvesting in superconducting circuits, we propose a model of variable-gap particle detector that aims to bridge some of the gaps between Unruh-DeWitt (UDW) models…

Quantum Physics · Physics 2025-05-06 Adam Teixidó-Bonfill , Xi Dai , Adrian Lupascu , Eduardo Martín-Martínez

We study the effects of horizons on the entanglement harvested between two Unruh-DeWitt detectors via the use of moving mirrors with and without strict horizons. The entanglement reveals the sensitivity of the entanglement harvested to the…

General Relativity and Quantum Cosmology · Physics 2020-10-20 Wan Cong , Chen Qian , Michael R. R. Good , Robert B. Mann

So far, entanglement harvesting has been extensively studied in free space setups. Here, we provide a detailed analytical and numerical analysis of entanglement harvesting in cavities. Specifically, we adiabatically couple the quantized…

Quantum Physics · Physics 2026-01-26 Jannik Ströhle , Nikolija Momcilovic

We study the protocol of entanglement harvesting when the particle detectors that harvest entanglement from the field are replaced by fully relativistic quantum field theories. We show that two localized modes of the quantum field theories…

We study entanglement harvesting for matter systems such as atoms, ions or molecules, whose center of mass degrees of freedom are quantum delocalized and which couple to a relativistic quantum field. We employ a generalized Unruh-deWitt…

Separate regions in space are generally entangled, even in the vacuum state. It is known that this entanglement can be swapped to separated Unruh-DeWitt detectors, i.e., that the vacuum can serve as a source of entanglement. Here, we…

Quantum Physics · Physics 2011-03-23 Mathieu Cliche , Achim Kempf

We study correlations between two Unruh-DeWitt detectors coupled to a scalar field in a cylindrical cavity. Boundary conditions strongly modify the detector-correlation dynamics relative to free space. The entanglement negativity is…

Quantum Physics · Physics 2026-05-28 Shagun Kaushal , Harkirat Singh Sahota

We analyze a tripartite entanglement harvesting protocol with three Unruh-DeWitt detectors adiabatically interacting with a quantum scalar field. We consider linear, equilateral triangular, and scalene triangular configurations for the…

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