In this section
@article{Zuo:2023:10.1103/PhysRevA.108.062601,
author = {Zuo, Z and Hanks, M and Kim, MS},
doi = {10.1103/PhysRevA.108.062601},
journal = {Physical Review A: Atomic, Molecular and Optical Physics},
title = {Coherent control of the causal order of entanglement distillation},
url = {http://dx.doi.org/10.1103/PhysRevA.108.062601},
volume = {108},
year = {2023}
}
TY - JOUR
AB - Indefinite causal order is an evolving field with potential involvement in quantum technologies. Here we propose and study one possible scenario of practical application in quantum communication: a compound entanglement distillation protocol that features two steps of a basic distillation protocol applied in a coherent superposition of two causal orders. This is achieved by using one faulty entangled pair to control-swap two others before a fourth pair is combined with the two swapped ones consecutively. As a result, the protocol distills the four faulty entangled states into one of a higher fidelity. Our protocol has a higher fidelity of distillation and probability of success for some input faulty pairs than conventional concatenations of the basic protocol that follow a definite distillation order. Our proposal shows the advantage of indefinite causal order in an application setting consistent with the requirements of quantum communication.
AU - Zuo,Z
AU - Hanks,M
AU - Kim,MS
DO - 10.1103/PhysRevA.108.062601
PY - 2023///
SN - 1050-2947
TI - Coherent control of the causal order of entanglement distillation
T2 - Physical Review A: Atomic, Molecular and Optical Physics
UR - http://dx.doi.org/10.1103/PhysRevA.108.062601
UR - https://journals.aps.org/pra/abstract/10.1103/PhysRevA.108.062601
UR - http://hdl.handle.net/10044/1/113549
VL - 108
ER -