2019/01/09 by Jie Zhu, Meng-Jun Hu, Yue Dai +6 · 1 citation
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1103/physrevresearch.2.043068
published as Phys. Rev. Research 2, 043068 (2020) · 10 pages, 7 figures
arxiv created 2019/01/09 · arxiv updated 2020/10/21
We experimentally realize the internal and external entanglement tradeoff, which is a new kind of entanglement monogamy relation different from that usually discussed. Using a source of twin photons, we find that the external entanglement in polarization of twin photons, and the path-polarization internal entanglement of one photon, limit each other. In the extreme case, when the internal state is maximally entangled, the external entanglement must be vanishing, that illustrate entanglement monogamy. Our results of the experiment coincide with the theoretical predictions, and therefore provide a direct experimental observation of the internal and external entanglement monogamy relation.