Entangling three identical particles via spatial overlap
- URL: http://arxiv.org/abs/2104.05937v2
- Date: Wed, 2 Mar 2022 21:46:26 GMT
- Title: Entangling three identical particles via spatial overlap
- Authors: Donghwa Lee, Tanumoy Pramanik, Young-Wook Cho, Hyang-Tag Lim,
Seungbeom Chin and Yong-Su Kim
- Abstract summary: Quantum correlations between identical particles are at the heart of quantum technologies.
We show that the tripartite entanglement class decays from the genuine entanglement to the full separability as the particles become more distinguishable from each other.
Our results support the prediction that particle indistinguishability is a fundamental element for entangling identical particles.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Quantum correlations between identical particles are at the heart of quantum
technologies. Several studies with two identical particles have shown that the
spatial overlap and indistinguishability between the particles are necessary
for generating bipartite entanglement. On the other hand, researches on the
extension to more than two-particle systems are limited by the practical
difficulty to control multiple identical particles in laboratories. In this
work, we propose schemes to generate two fundamental classes of genuine
tripartite entanglement, i.e., GHZ and W classes, which are experimentally
demonstrated with three identical photons. We also show that the tripartite
entanglement class decays from the genuine entanglement to the full
separability as the particles become more distinguishable from each other. Our
results support the prediction that particle indistinguishability is a
fundamental element for entangling identical particles.
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