Fate of multiparticle entanglement when one particle becomes classical
Zhen‐Peng Xu, Satoya Imai, Otfried Gühne · Physical Review A · 2023
The authors study the change of multiparticle entanglement under the classicalization of one particle. To characterize this change, the authors introduce one suitable quantity and investigate its properties. For example, the entanglement change caused by classicalization of only one qubit can still be arbitrarily large.