Room-temperature spontaneous superradiance from single diamond nanocrystals.

Room-temperature spontaneous superradiance from single diamond nanocrystals.
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DOI:
10.1038/s41467-017-01397-4
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发表时间:
2017-10-31
影响因子:
16.6
通讯作者:
Volz T
Volz T
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Bradac C;Johnsson MT;Breugel MV;Baragiola BQ;Martin R;Juan ML;Brennen GK;Volz T

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超辐射(SR)是一种协同现象,当一个量子发射体的集合集体耦合到一个电磁场模式时,作为一个单一的、大质量的偶极子,以增强的速率辐射光子。以前对固态系统的研究要么报告了来自至少一个空间维度远大于光波长的大尺寸晶体的SR,要么只接近液氦的温度。在这里,我们报告了从空间尺寸远小于光波长的单个高发光金刚石纳米晶体中观察到的室温超辐射,每个纳米晶体含有大量(~ 103)嵌入的氮空位(NV)中心。这一结果为在室温下良好控制的固态量子系统中系统地研究SR铺平了道路。以前,超辐射是在相当大的晶体或接近液氦温度的地方观测到的。在这里,bradac等人报道了从空间尺寸远小于光波长的单个高发光金刚石纳米晶体中观察到的室温超辐射。
Superradiance (SR) is a cooperative phenomenon which occurs when an ensemble of quantum emitters couples collectively to a mode of the electromagnetic field as a single, massive dipole that radiates photons at an enhanced rate. Previous studies on solid-state systems either reported SR from sizeable crystals with at least one spatial dimension much larger than the wavelength of the light and/or only close to liquid-helium temperatures. Here, we report the observation of room-temperature superradiance from single, highly luminescent diamond nanocrystals with spatial dimensions much smaller than the wavelength of light, and each containing a large number (~ 103) of embedded nitrogen-vacancy (NV) centres. The results pave the way towards a systematic study of SR in a well-controlled, solid-state quantum system at room temperature. Previously, superradiance was observed from sizeable crystals or close to liquid-helium temperatures. Here, Bradec et al. report the observation of room-temperature superradiance from single, highly luminescent diamond nanocrystals with spatial dimensions much smaller than the wavelength of light.
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发表时间: 2014-08-22
影响因子: 16.6
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期刊: PHYSICAL REVIEW B
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