journal article·2024-12

Spin‐Orbit Coupled Trapped Exciton–Polariton Condensates in Perovskite Microcavity

Qiuyu Shang, Xinyi Deng, Jiepeng Song, Yin Liang, Heng Lu, Yiyang Gong, Shulin Chen, Peng Gao, Xiaowei Zhan, Xinfeng Liu, Qing Zhang

Advanced Optical Materials· Volume 12· Issue 36
Publisher page

Abstract

Abstract Lead halide perovskites exhibit superior properties compared to classical III–V semiconductor quantum wells for room‐temperature polaritonic applications, particularly owing to the significant crystalline anisotropy. This anisotropy results in a sizeable split in condensate energy, which can profoundly influence polariton interactions and spin relaxation pathways. Besides, trapped exciton‐polariton (TEP) exhibits a quantized energy landscape, which is essential for modulating polaritonic logical circuits. Herein, spin‐orbit coupled TEP lasing is demonstrated in birefringent perovskite. Cascade condensate processes between orthogonally polarized polariton branches happen considering the dominance of reservoir exciton–polariton or polariton–polariton scattering within each stage. Such condensation adequately is verified via the input‐output “S” curve, the narrowed linewidth, the energy blueshift, and the real space spatial coherence of the orthogonally polarized modes. This trapped anisotropic condensate holds great promise for room‐temperature polaritonic and spintronics.
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Research context

OpenAlex topics: Strong Light-Matter Interactions · Social Media and Politics · Quantum and electron transport phenomena

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Affiliations

School of Materials Science and Engineering Peking University Beijing 100871 P. R. China

Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore

CAS Key Laboratory of Standardization and Measurement for Nanotechnology CAS Center of Excellence for Nanoscience National Center for Nanoscience and Technology Beijing 100190 P. R. China

School of Physics and Electron Microscopy Laboratory International Center for Quantum Materials School of Physics Peking University Beijing 100871 P. R. China

Changsha Semiconductor Technology and Application Innovation Research Institute College of Semiconductors (College of Integrated Circuits) Hunan University Changsha 410082 P. R. China

Funding

National Natural Science Foundation of China · Natural Science Foundation of Beijing Municipality

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