Long-lived entanglement of two multilevel atoms in a waveguide

被引：12

作者：

Facchi, Paolo ^{[1
,2
,3
]}

Pascazio, Saverio ^{[1
,2
,3
,4
]}

Pepe, Francesco V. ^{[3
]}

Yuasa, Kazuya ^{[5
]}

机构：

[1] Univ Bari, Dipartimento Fis, I-70126 Bari, Italy

[2] Univ Bari, MECENAS, I-70126 Bari, Italy

[3] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy

[4] CNR, INO, I-50125 Florence, Italy

[5] Waseda Univ, Dept Phys, Tokyo 1698555, Japan

来源：

JOURNAL OF PHYSICS COMMUNICATIONS | 2018年 / 2卷 / 03期

基金：

日本学术振兴会;

关键词：

entanglement generation; waveguide QED; bound states;

D O I：

10.1088/2399-6528/aaae9f

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the presence of nontrivial bound states of two multilevel quantum emitters and the photons propagating in a linear waveguide, when the emitters can be modeled as harmonic oscillators. We characterize the conditions for the existence of such states and determine their general properties, focusing in particular on the entanglement between the two emitters, that increases with the number of excitations. Wediscuss the relevance of our results for entanglement preservation and generation by spontaneous relaxation processes. We finally introduce a perturbative method for determining the existence of long-lived states, for general level spacings and couplings.

引用

页数：9

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