Strong coupling of two quantum dots with a microcavity in the presence of an external and tilted magnetic field

被引：5

作者：

Jimenez-Orjuela, C. A. ^{[1
]}

Vinck-Posada, H. ^{[1
]}

Villas-Boas, Jose M. ^{[2
]}

机构：

[1] Univ Nacl Colombia, Dept Fis, Bogota 111321, Colombia

[2] Univ Fed Uberlandia, Inst Fis, Uberlandia 38400902, MG, Brazil

来源：

PHYSICA B-CONDENSED MATTER | 2020年 / 585卷

关键词：

Tavis-Cummings; Brights excitons; Dark excitons; Magnetic field; SPINS;

D O I：

10.1016/j.physb.2020.412070

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Including an external magnetic field.. in a Tavis-Cummings model enable us to consider four exciton states in each quantum dot, two brights and two darks. With a continuous and incoherent pump to a cavity, we explore the conditions of occupation and emission as a function of B. We have found that although the dark excitons are optically inactive, these show a trace of emission as a result of both the strong coupling between light and matter and the interaction between bright and dark exciton states mediated by the magnetic field. Further, tuning one of the quantum dots at resonance with the cavity, we report the set of parameters that allows us to change the resonance condition between exciton states from different quantum dots, namely, we use the magnetic field as a control parameter to select which exciton state and which quantum dot will be mostly coupled to the cavity.

引用

页数：4

共 18 条

[11] Dephasing of Exciton Polaritons in Photoexcited InGaAs Quantum Dots in GaAs Nanocavities [J].

Laucht, A. ;

Hauke, N. ;

Villas-Boas, J. M. ;

Hofbauer, F. ;

Boehm, G. ;

Kaniber, M. ;

Finley, J. J. .

PHYSICAL REVIEW LETTERS, 2009, 103 (08)

[12] Interfacing single photons and single quantum dots with photonic nanostructures [J].

Lodahl, Peter ;

Mahmoodian, Sahand ;

Stobbe, Soren .

REVIEWS OF MODERN PHYSICS, 2015, 87 (02) :347-400

[13] Direct optical state preparation of the dark exciton in a quantum dot [J].

Lueker, S. ;

Kuhn, T. ;

Reiter, D. E. .

PHYSICAL REVIEW B, 2015, 92 (20)

[14] Dynamics of the excitations of a quantum dot in a microcavity [J].

Perea, JI ;

Porras, D ;

Tejedor, C .

PHYSICAL REVIEW B, 2004, 70 (11) :115304-1

[15] Strong coupling in a single quantum dot-semiconductor microcavity system [J].

Reithmaier, JP ;

Sek, G ;

Löffler, A ;

Hofmann, C ;

Kuhn, S ;

Reitzenstein, S ;

Keldysh, LV ;

Kulakovskii, VD ;

Reinecke, TL ;

Forchel, A .

NATURE, 2004, 432 (7014) :197-200

[16] Control of the Strong Light-Matter Interaction between an Elongated In0.3Ga0.7As Quantum Dot and a Micropillar Cavity Using External Magnetic Fields [J].

Reitzenstein, S. ;

Muench, S. ;

Franeck, P. ;

Rahimi-Iman, A. ;

Loeffler, A. ;

Hoefling, S. ;

Worschech, L. ;

Forchel, A. .

PHYSICAL REVIEW LETTERS, 2009, 103 (12)

[17]

Warburton RJ, 2013, NAT MATER, V12, P483, DOI [10.1038/NMAT3585, 10.1038/nmat3585]

[18] Possible realization of entanglement, logical gates, and quantum-information transfer with superconducting-quantum-interference-device qubits in cavity QED [J].

Yang, CP ;

Chu, SI ;

Han, SY .

PHYSICAL REVIEW A, 2003, 67 (04) :8

← 1 2 →