强电磁场中的纠缠和对的产生

IF 5.3 2区物理与天体物理 Q1 Physics and Astronomy

Physical Review D Pub Date : 2025-09-26 DOI:10.1103/9br2-tj4t

S. Tang, B. Dillon, B. King

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引用次数: 0

摘要

我们研究了光子在高强度激光脉冲中通过非线性布雷特-惠勒过程散射时产生的电子-正电子对之间的自旋相关性。我们发现所生成的电子-正电子对的自旋态表现出很强的纠缠态，其程度对光子能量、激光强度以及光子和激光脉冲的相对极化非常敏感。具有高偏振度的光子即使在中等强度（非微扰）状态下也能产生强纠缠对。我们发现，如果光子是由康普顿源提供的，那么用现有的技术就可以产生强自旋纠缠的电子-正电子对。

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Entanglement and pair production in intense electromagnetic fields

We investigate the spin correlations between electron-positron pairs created from a photon when it scatters in a high-intensity laser pulse via the nonlinear Breit-Wheeler process. We find that the spin states of the generated electron-positron pair can exhibit strong entanglement, with the degree being sensitive to the photon energy, laser intensity, and the relative polarization of the photon and laser pulse. Photons with a high degree of polarization can create strongly entangled pairs even in the intermediate intensity (nonperturbative) regime. We find that if the photons are provided by a Compton source, strongly spin-entangled electron-positron pairs can be generated with technology available today.

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来源期刊

Physical Review D 物理-天文与天体物理

CiteScore

9.20

自引率

36.00%

发文量

审稿时长

2 months

期刊介绍： Physical Review D (PRD) is a leading journal in elementary particle physics, field theory, gravitation, and cosmology and is one of the top-cited journals in high-energy physics. PRD covers experimental and theoretical results in all aspects of particle physics, field theory, gravitation and cosmology, including: Particle physics experiments, Electroweak interactions, Strong interactions, Lattice field theories, lattice QCD, Beyond the standard model physics, Phenomenological aspects of field theory, general methods, Gravity, cosmology, cosmic rays, Astrophysics and astroparticle physics, General relativity, Formal aspects of field theory, field theory in curved space, String theory, quantum gravity, gauge/gravity duality.