Electromechanical control of nitrogen-vacancy defect emission using graphene NEMS.
Electromechanical control of nitrogen-vacancy defect emission using graphene NEMS.
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DOI：
10.1038/ncomms10218
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发表时间：
2016-01-08
影响因子：
16.6
通讯作者：
Koppens FH
中科院分区：
文献类型：
--
作者：
Reserbat-Plantey A;Schädler KG;Gaudreau L;Navickaite G;Güttinger J;Chang D;Toninelli C;Bachtold A;Koppens FH
尽管近年来纳米光力学研究取得了进展，但迄今为止，在纳米尺度上对光场的主动控制还没有通过片上纳米机电系统（NEMS）实现。在这里，我们提出了一种新型的混合系统，由片上石墨烯NEMS组成，该系统悬浮在氮空位中心（nvc）上方几十纳米处，nvc是嵌入在纳米金刚石中的稳定的单光子发射器。由NVC发射的光子的机电控制是通过石墨烯NEMS位置的静电调谐来提供的，这被转换为NVC发射强度的调制。石墨烯位移与NVC发射之间的光力学耦合是基于近场偶极-偶极相互作用。这种类型的光-机械耦合在较小的距离上增强，使其适合于纳米级器件。这些成果为片上发射阵列的选择性控制、单个纳米物体的光谱学、集成光力学信息处理以及量子光力学开辟了新的途径。在纳米尺度上对光场的主动控制是很难实现的。在这里，作者制作了一个片上石墨烯NEMS，悬浮在氮空位中心上方几十纳米处，并演示了通过静电调谐石墨烯NEMS位置发出的光子的机电控制。
Despite recent progress in nano-optomechanics, active control of optical fields at the nanoscale has not been achieved with an on-chip nano-electromechanical system (NEMS) thus far. Here we present a new type of hybrid system, consisting of an on-chip graphene NEMS suspended a few tens of nanometres above nitrogen-vacancy centres (NVCs), which are stable single-photon emitters embedded in nanodiamonds. Electromechanical control of the photons emitted by the NVC is provided by electrostatic tuning of the graphene NEMS position, which is transduced to a modulation of NVC emission intensity. The optomechanical coupling between the graphene displacement and the NVC emission is based on near-field dipole–dipole interaction. This class of optomechanical coupling increases strongly for smaller distances, making it suitable for nanoscale devices. These achievements hold promise for selective control of emitter arrays on-chip, optical spectroscopy of individual nano-objects, integrated optomechanical information processing and open new avenues towards quantum optomechanics. Active control of optical fields at the nanoscale is difficult to achieve. Here, the authors fabricate an on-chip graphene NEMS suspended a few tens of nanometres above nitrogen vacancy centres and demonstrate electromechanical control of the photons emitted by electrostatic tuning of the graphene NEMS position.