Engineering of entanglement and spin state transfer via quantum chains of 
atomic spins at large separations

Bazhanov, Dmitry I.; Sivkov, Ilia N.; Stepanyuk, Valeri S.

doi:10.1038/s41598-018-32145-3

アイテム詳細

登録内容を編集ファイル形式で保存

一時保存へ追加

タグ情報を表示リリース履歴を表示詳細要約

公開

学術論文

Engineering of entanglement and spin state transfer via quantum chains of atomic spins at large separations

MPS-Authors

Bazhanov, Dmitry I.
Max Planck Institute of Microstructure Physics, Max Planck Society;

/persons/resource/persons260116

Stepanyuk, Valeri S.
Max Planck Institute of Microstructure Physics, Max Planck Society;

External Resource

https://doi.org/10.1038/s41598-018-32145-3
(出版社版)

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

フルテキスト (公開)

s41598-018-32145-3.pdf
(出版社版), 3MB

付随資料 (公開)

There is no public supplementary material available

引用

Bazhanov, D. I., Sivkov, I. N., & Stepanyuk, V. S. (2018). Engineering of entanglement and spin state transfer via quantum chains of atomic spins at large separations. Scientific Reports, 8:. doi:10.1038/s41598-018-32145-3.

引用: https://hdl.handle.net/21.11116/0000-0009-271D-C

要旨

Several recent experiments have shown that long-range exchange interactions can determine collective magnetic ground states of nanostructures in bulk and on surfaces. The ability to generate and control entanglement in a system with long-range interaction will be of great importance for future quantum technology. An important step forward to reach this goal is the creation of entangled states for spins of distant magnetic atoms. Herein, the generation of long-distance entanglement between remote spins at large separations in bulk and on surface is studied theoretically, based on a quantum spin Hamiltonian and time-dependent Schrödinger equation for experimentally realized conditions. We demonstrate that long-distance entanglement can be generated between remote spins by using an appropriate quantum spin chain (a quantum mediator), composed by sets of antiferromagnetically coupled spin dimers. Ground state properties and quantum spin dynamics of entangled atoms are studied. We demonstrate that one can increase or suppress entanglement by adding a single spin in the mediator. The obtained result is explained by monogamy property of entanglement distribution inside a quantum spin system. We present a novel approach for non-local sensing of remote magnetic adatoms via spin entanglement.