Excitation transfer in disordered spin chains with long-range exchange interactions

被引：2

作者：

Palaiodimopoulos, Nikolaos E. ^{[1
]}

Kiefer-Emmanouilidis, Maximilian ^{[2
,3
,4
]}

Kurizki, Gershon ^{[5
]}

Petrosyan, David ^{[1
]}

机构：

[1] FORTH, Inst Elect Struct & Laser, GR-70013 Iraklion, Greece

[2] Univ Kaiserslautern Landau, Dept Phys, D-67663 Kaiserslautern, Germany

[3] Univ Kaiserslautern Landau, Res Ctr OPTIMAS, D-67663 Kaiserslautern, Germany

[4] German Res Ctr Artificial Intelligence, Embedded Intelligence, D-67663 Kaiserslautern, Germany

[5] Weizmann Inst Sci, Dept Chem & Biol Phys, IL-7610001 Rehovot, Israel

来源：

SCIPOST PHYSICS CORE | 2023年 / 6卷 / 01期

关键词：

ADIABATIC POPULATION TRANSFER; N-ATOM SYSTEM; LOCALIZATION; STATES; DELOCALIZATION; FLUCTUATIONS; TRANSITION; RADIATION; DENSITY;

D O I：

10.21468/SciPostPhysCore.6.1.017

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We examine spin excitation or polarization transfer via spin chains with long-range ex-change interactions in the presence of diagonal and off-diagonal disorder. To this end, we determine the mean localization length of the single-excitation eigenstates of the chain for various strengths of the disorder. We then identify the energy eigenstates of the system with large localization length and sufficient support at the chain boundaries that are suitable to transfer an excitation between the sender and receiver spins con-nected to the opposite ends of the chain. We quantify the performance of two transfer schemes involving weak static couplings of the sender and receiver spins to the chain, and time-dependent couplings realizing stimulated adiabatic passage of the excitation via the intermediate eigenstates of the chain which exhibits improved performance.

引用

页数：16

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