Quantum emitters are widely used in quantum networks,quantum information processing,and quantum sensing due to their excellent optical properties.Compared with Stokes excitation,quantum emitters under anti-Stokes exci...Quantum emitters are widely used in quantum networks,quantum information processing,and quantum sensing due to their excellent optical properties.Compared with Stokes excitation,quantum emitters under anti-Stokes excitation exhibit better performance.In addition to laser cooling and nanoscale thermometry,anti-Stokes excitation can improve the coherence of single-photon sources for advanced quantum technologies.In this review,we follow the recent advances in phononassisted upconversion photoluminescence of quantum emitters and discuss the upconversion mechanisms,applications,and prospects for quantum emitters with anti-Stokes excitation.展开更多
The acoustic modes of diamond are not only of profound significance for studying its thermal conductivity, mechanical properties, and optical properties, but also play a definite role in the performance of high-freque...The acoustic modes of diamond are not only of profound significance for studying its thermal conductivity, mechanical properties, and optical properties, but also play a definite role in the performance of high-frequency and high-power acoustic wave devices. Here, we report on the bulk acoustic waves(BAWs) and surface acoustic waves(SAWs) of single-crystal diamond using angle-resolved Brillouin light scattering(BLS) spectroscopy. We identify two high-speed surface skimming bulk waves(SSBW) with acoustic velocities of 1.277×10^(6) and 1.727×10^(6) cm/s, respectively. Furthermore, we obtain the relationship between the velocity of arbitrary BAWs and that of BAWs propagating along the high-symmetric axis at different incident angles. In the community of diamond-based acoustic studies, our results may provide a valuable reference for fundamental research and device engineering.展开更多
基金the National Key Research and Development Program of China(2017YFA0303401)the CAS Interdisciplinary Innovation Team,the Strategic Priority Research Program of Chinese Academy of Sciences(grant no.XDB28000000)the NSFC(12074371,U21A2070,and 62027816)。
文摘Quantum emitters are widely used in quantum networks,quantum information processing,and quantum sensing due to their excellent optical properties.Compared with Stokes excitation,quantum emitters under anti-Stokes excitation exhibit better performance.In addition to laser cooling and nanoscale thermometry,anti-Stokes excitation can improve the coherence of single-photon sources for advanced quantum technologies.In this review,we follow the recent advances in phononassisted upconversion photoluminescence of quantum emitters and discuss the upconversion mechanisms,applications,and prospects for quantum emitters with anti-Stokes excitation.
基金supported by the National Basic Research Program of China(Grant Nos. 2016YFA0300804,and 2016YFA0301200)the Beijing Natural Science Foundation (Grant No. JQ18014)the National Natural Science Foundation of China (Grant Nos. 12074371,and 51527901)。
文摘The acoustic modes of diamond are not only of profound significance for studying its thermal conductivity, mechanical properties, and optical properties, but also play a definite role in the performance of high-frequency and high-power acoustic wave devices. Here, we report on the bulk acoustic waves(BAWs) and surface acoustic waves(SAWs) of single-crystal diamond using angle-resolved Brillouin light scattering(BLS) spectroscopy. We identify two high-speed surface skimming bulk waves(SSBW) with acoustic velocities of 1.277×10^(6) and 1.727×10^(6) cm/s, respectively. Furthermore, we obtain the relationship between the velocity of arbitrary BAWs and that of BAWs propagating along the high-symmetric axis at different incident angles. In the community of diamond-based acoustic studies, our results may provide a valuable reference for fundamental research and device engineering.
