Phase dependence of entanglement generation in a PT-symmetric system of two micro-cavities

IF 3.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Optical and Quantum Electronics Pub Date : 2025-02-01 DOI:10.1007/s11082-025-08045-y

Vinh Le Duc, Hong Nguyen Thi, Khoa Doan Quoc

引用次数: 0

Abstract

A system of two cavities connected by a single-mode fiber is considered. We investigate the generation of bipartite entanglement between cavities by calculating bipartite negativity. We show that the phase transition point of PT-symmetry strongly depends on the phase factor characterizing the propagation of photons in the fiber. The range of that phase factor in which the system is in the unbroken phase of PT-symmetry is estimated. We also indicate that the entanglement between cavities depends not only on the gain and loss of energy in the system but also on that phase factor. In addition, we show that, under a fine-tuning of the phase factor, our system can be a source of maximally entangled states.

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来源期刊

Optical and Quantum Electronics 工程技术-工程：电子与电气

CiteScore

4.60

自引率

20.00%

发文量

810

审稿时长

3.8 months

期刊介绍： Optical and Quantum Electronics provides an international forum for the publication of original research papers, tutorial reviews and letters in such fields as optical physics, optical engineering and optoelectronics. Special issues are published on topics of current interest. Optical and Quantum Electronics is published monthly. It is concerned with the technology and physics of optical systems, components and devices, i.e., with topics such as: optical fibres; semiconductor lasers and LEDs; light detection and imaging devices; nanophotonics; photonic integration and optoelectronic integrated circuits; silicon photonics; displays; optical communications from devices to systems; materials for photonics (e.g. semiconductors, glasses, graphene); the physics and simulation of optical devices and systems; nanotechnologies in photonics (including engineered nano-structures such as photonic crystals, sub-wavelength photonic structures, metamaterials, and plasmonics); advanced quantum and optoelectronic applications (e.g. quantum computing, memory and communications, quantum sensing and quantum dots); photonic sensors and bio-sensors; Terahertz phenomena; non-linear optics and ultrafast phenomena; green photonics.