Entanglement Autodistillation from Particle Decays,Physical Review Letters

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Entanglement Autodistillation from Particle Decays
Physical Review Letters ( IF 8.1 ) Pub Date : 2024-09-10 , DOI: 10.1103/physrevlett.133.111801
J. A. Aguilar-Saavedra ₁ , J. A. Casas ₁

Affiliation

Particle decays do not constitute a spin “measurement” in the quantum-mechanical sense but still modify the spin state, in particular, for an entangled system. We show that for a spin-entangled pair of particles the entanglement of the system can increase after the decay of one particle. This unique phenomenon has no equivalent for stable particles and could be observable in top pair production at a high-energy polarized e+e− collider.

Published by the American Physical Society

2024

中文翻译：

粒子衰变的纠缠自动蒸馏

粒子衰变不构成量子力学意义上的自旋“测量”，但仍会改变自旋状态，特别是对于纠缠系统。我们表明，对于一对自旋纠缠的粒子，在一个粒子衰变后，系统的纠缠会增加。这种独特的现象对于稳定粒子来说是没有等价物的，可以在高能极化 e+e− 对撞机的顶对产生中观察到。美国物理学会 2024 年出版

更新日期：2024-09-10

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