Temperature study of Rydberg exciton optical properties in Cu2O

Article

关键词: ELECTROMAGNETICALLY INDUCED TRANSPARENCY;    FINE-STRUCTURE;    ABSORPTION;    SPECTRA;    SERIES;    MEDIA;    OXIDE;   

DOI  :  10.1103/PhysRevB.103.205203

来源: SCIE

【 摘 要 】

Rydberg excitons in Cu2O can be an emergent platform for solid-state quantum information processing by utilizing the exaggerated properties of high-lying excited states within the material. To develop practical quantum systems, high-temperature operation is desirable. Here, we study the temperature dependence of the yellow and green Rydberg exciton resonances in a thin Cu2O crystal via broad-band phonon-assisted absorption spectra between 4 K and 100 K. At 4 K, we can identify the principal quantum number n = 11 yellow and n = 4 green Rydberg exciton states, beyond which we are limited by the spectral resolution of standard absorption techniques. Above liquid nitrogen boiling temperature (similar to 80K), the n = 6 yellow and n = 4 green Rydberg exciton states are readily captured and higher-temperature yellow Rydberg exciton optical properties still exhibit the standard scaling laws seen at low temperatures. This promising result lays the groundwork for a new route to build a high-temperature Rydberg quantum information processing architecture with solid-state Cu2O.

【 授权许可】

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