6533b7d9fe1ef96bd126cc67

RESEARCH PRODUCT

Distillation of entanglement between distant systems by repeated measurements on an entanglement mediator

Giuseppe CompagnoAntonino MessinaKazuya YuasaAnna NapoliHiromichi NakazatoMakoto Unoki

subject

PhysicsQuantum PhysicsFOS: Physical sciencesQuantum entanglementInformation theoryMultipartite entanglementAtomic and Molecular Physics and Opticslaw.inventionlawYield (chemistry)Quantum mechanicsStatistical physicsPurification methodsQuantum Physics (quant-ph)Distillationeffects decay survival probability

description

A recently proposed purification method, in which the Zeno-like measurements of a subsystem can bring about a distillation of another subsystem in interaction with the former, is utilized to yield entangled states between distant systems. It is shown that the measurements of a two-level system locally interacting with other two spatially separated not coupled subsystems, can distill entangled states from the latter irrespectively of the initial states of the two subsystems.

https://doi.org/10.1103/physreva.70.052316