Condensation of 2D exciton-polaritons in an open-access microcavity

被引：2

作者：

Li, Feng ^{[1
,2
]}

Li, Yiming ^{[1
,2
]}

Giriunas, L. ^{[3
]}

Sich, M. ^{[3
]}

Solnyshkov, D. D. ^{[4
,5
]}

Malpuech, G. ^{[4
]}

Trichet, A. A. P. ^{[6
]}

Smith, J. M. ^{[6
]}

Clarke, E. ^{[7
]}

Skolnick, M. S. ^{[3
]}

Krizhanovskii, D. N. ^{[3
]}

机构：

[1] Xi An Jiao Tong Univ, Fac Elect & Informat Engn, Sch Elect Sci & Engn, Key Lab Phys Elect & Devices,Minist Educ, Xian 710049, Peoples R China

[2] Xi An Jiao Tong Univ, Fac Elect & Informat Engn, Sch Elect Sci & Engn, Shaanxi Key Lab Informat Photon Tech, Xian 710049, Peoples R China

[3] Univ Sheffield, Dept Phys & Astron, Sheffield, S Yorkshire, England

[4] Univ Clermont Auvergne, CNRS, PHOTON N2, Inst Pascal, 4 Ave Blaise Pascal, F-63178 Aubiere, France

[5] Inst Univ France IUF, F-75231 Paris, France

[6] Univ Oxford, Dept Mat, Oxford OX1 3PH, England

[7] Univ Sheffield, EPSRC Natl Ctr III V Technol, Sheffield S1 3JD, S Yorkshire, England

来源：

JOURNAL OF APPLIED PHYSICS | 2022年 / 131卷 / 09期

基金：

中国国家自然科学基金; 英国工程与自然科学研究理事会;

关键词：

ROOM-TEMPERATURE; ABSORPTION;

D O I：

10.1063/5.0076459

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We establish a tunable open-access microcavity consisting of two planar distributed Bragg reflectors (DBRs) individually controlled by nanopositioners. By varying the cavity length, such configuration enables variation of the light-matter coupling strength by a factor of 2, while keeping in microresonators the same active region and cavity mirrors. Polariton condensation was demonstrated over a large range of Rabi splittings and the corresponding threshold diagram was derived as a function of cavity-exciton detuning, which fits well with theoretical simulations. The results show that for various light-matter coupling strengths, optimal detunings featured by the lowest condensation threshold always occur at a fixed depth of energy trap between the exciton reservoir and the polariton ground state, which enables the most efficient exciton-exciton scattering into the condensate state in the driven-dissipative polaritonic system.

引用

页数：5

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