Bosonic Condensation and Disorder-Induced Localization in a Flat Band

被引：282

作者：

Baboux, F. ^{[1
]}

Ge, L. ^{[2
,3
]}

Jacqmin, T. ^{[1
,7
]}

Biondi, M. ^{[4
]}

Galopin, E. ^{[1
]}

Lemaitre, A. ^{[1
]}

Le Gratiet, L. ^{[1
]}

Sagnes, I. ^{[1
]}

Schmidt, S. ^{[4
]}

Tuereci, H. E. ^{[5
]}

Amo, A. ^{[1
]}

Bloch, J. ^{[1
,6
]}

机构：

[1] Univ Paris Saclay, CNRS, LPN, Route Nozay, F-91460 Marcoussis, France

[2] CUNY Coll Staten Isl, Dept Engn Sci & Phys, Staten Isl, NY 10314 USA

[3] CUNY, Grad Ctr, New York, NY 10016 USA

[4] ETH, Inst Theoret Phys, CH-8093 Zurich, Switzerland

[5] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA

[6] Univ Paris Saclay, Ecole Polytech, Dept Phys, F-91128 Palaiseau, France

[7] UPMC Sorbonne Univ, ENS PSL Res Univ, CNRS, Coll France,Lab Kastler Brossel, 4 Pl Jussieu, F-75252 Paris 05, France

来源：

PHYSICAL REVIEW LETTERS | 2016年 / 116卷 / 06期

基金：

美国国家科学基金会; 欧洲研究理事会; 瑞士国家科学基金会;

关键词：

EXCITON-EXCITON SCATTERING; DYNAMICS;

D O I：

10.1103/PhysRevLett.116.066402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the engineering of a nondispersive (flat) energy band in a geometrically frustrated lattice of micropillar optical cavities. By taking advantage of the non-Hermitian nature of our system, we achieve bosonic condensation of exciton polaritons into the flat band. Because of the infinite effective mass in such a band, the condensate is highly sensitive to disorder and fragments into localized modes reflecting the elementary eigenstates produced by geometric frustration. This realization offers a novel approach to studying coherent phases of light and matter under the controlled interplay of frustration, interactions, and dissipation.

引用

页数：6

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