Long-lived spin coherence of indirect excitons in GaAs coupled quantum wells

被引：11

作者：

Beian, Mussie ^{[1
]}

Alloing, Mathieu ^{[1
,3
,4
]}

Cambril, Edmond ^{[2
]}

Carbonell, Carmen Gomez ^{[2
]}

Osmond, Johann ^{[1
]}

Lemaitre, Aristide ^{[2
]}

Dubin, Francois ^{[1
,3
,4
]}

机构：

[1] ICFO Inst Photon Sci, Castelldefels 08860, Spain

[2] CNRS, Lab Photon & Nanostruct, F-91460 Marcoussis, France

[3] CNRS, Inst Nanosci Paris, F-75005 Paris, France

[4] UPMC, F-75005 Paris, France

来源：

EPL | 2015年 / 110卷 / 02期

关键词：

RELAXATION; DYNAMICS;

D O I：

10.1209/0295-5075/110/27001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study spatially indirect excitons confined in a symmetric GaAs double quantum well. We show that the spin polarisation of very dilute gases can be optically imprinted, in both pure and superposition states. In the regime where indirect excitons can be localized, we observe at 350mK that the excitons spin degree of freedom is frozen with a relaxation time comparable to the coherence time and to the radiative lifetime (similar to 30 ns). Copyright (C) EPLA, 2015

引用

收藏

页数：5

相关论文

共 25 条

[1] Electric-field tuning of spin-dependent exciton-exciton interactions in coupled quantum wells [J].

Aichmayr, G ;

Jetter, M ;

Viña, L ;

Dickerson, J ;

Camino, F ;

Mendez, EE .

PHYSICAL REVIEW LETTERS, 1999, 83 (12) :2433-2436

[2] Quantum signature blurred by disorder in indirect exciton gases [J].

Alloing, M. ;

Lemaitre, A. ;

Dubin, F. .

EPL, 2011, 93 (01)

[3] Evidence for a Bose-Einstein condensate of excitons [J].

Alloing, Mathieu ;

Beian, Mussie ;

Lewenstein, Maciej ;

Fuster, David ;

Gonzalez, Yolanda ;

Gonzalez, Luisa ;

Combescot, Roland ;

Combescot, Monique ;

Dubin, Francois .

EPL, 2014, 107 (01)

[4] Nonlinear optical spectroscopy of indirect excitons in coupled quantum wells [J].

Andreakou, P. ;

Cronenberger, S. ;

Scalbert, D. ;

Nalitov, A. ;

Gippius, N. A. ;

Kavokin, A. V. ;

Nawrocki, M. ;

Leonard, J. R. ;

Butov, L. V. ;

Campman, K. L. ;

Gossard, A. C. ;

Vladimirova, M. .

PHYSICAL REVIEW B, 2015, 91 (12)

[5] Full Electrical Control of the Electron Spin Relaxation in GaAs Quantum Wells [J].

Balocchi, A. ;

Duong, Q. H. ;

Renucci, P. ;

Liu, B. L. ;

Fontaine, C. ;

Amand, T. ;

Lagarde, D. ;

Marie, X. .

PHYSICAL REVIEW LETTERS, 2011, 107 (13)

[6] EXCITON SPIN DYNAMICS IN GAAS HETEROSTRUCTURES [J].

BARAD, S ;

BARJOSEPH, I .

PHYSICAL REVIEW LETTERS, 1992, 68 (03) :349-352

[7] Effects of disorder on electron spin dynamics in a semiconductor quantum well [J].

Chen, Zhigang ;

Carter, Sam G. ;

Bratschitsch, Rudolf ;

Dawson, Philip ;

Cundiff, Steven T. .

NATURE PHYSICS, 2007, 3 (04) :265-269

[8] Coupling Quantum Tunneling with Cavity Photons [J].

Cristofolini, Peter ;

Christmann, Gabriel ;

Tsintzos, Simeon I. ;

Deligeorgis, George ;

Konstantinidis, George ;

Hatzopoulos, Zacharias ;

Savvidis, Pavlos G. ;

Baumberg, Jeremy J. .

SCIENCE, 2012, 336 (6082) :704-707

[9] SUBPICOSECOND SPIN RELAXATION DYNAMICS OF EXCITONS AND FREE-CARRIERS IN GAAS QUANTUM-WELLS [J].

DAMEN, TC ;

VINA, L ;

CUNNINGHAM, JE ;

SHAH, J ;

SHAM, LJ .

PHYSICAL REVIEW LETTERS, 1991, 67 (24) :3432-3435

[10] Indirect Excitons in Elevated Traps [J].

High, A. A. ;

Hammack, A. T. ;

Butov, L. V. ;

Mouchliadis, L. ;

Ivanov, A. L. ;

Hanson, M. ;

Gossard, A. C. .

NANO LETTERS, 2009, 9 (05) :2094-2098