Complete structural restoring of transferred multi-qubit quantum state

Autor:	Fel'dman, E. B., Pechen, A. N., Zenchuk, A. I.
Rok vydání:	2021
Předmět:	Quantum Physics
Zdroj:	Physics Letters A 413 (2021) 127605
Druh dokumentu:	Working Paper
DOI:	10.1016/j.physleta.2021.127605
Popis:	We develop the protocol for structural restoring of multi-quantum coherence matrices of the multi-qubit quantum state transferred from the sender to the receiver along a spin-1/2 chain. We also propose a protocol for constructing such 0-order coherence matrix that can be perfectly transferred in this process. The restoring protocol is based on the specially constructed unitary transformation of the extended receiver.{This transformation for a given length parameters of the chain is universally optimal in the sense that ones constructed it can be applied to optimally restore any higher-order coherence matrices. Comment: 28 pages, 2 figure
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2104.13762 Zobrazit plný text záznamu View this record from Arxiv