A single nitrogen-vacancy defect coupled to a nanomechanical oscillator
A single nitrogen-vacancy defect coupled to a nanomechanical oscillator
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DOI：
10.1038/nphys2070
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发表时间：
2011-11-01
期刊：
影响因子：
19.6
通讯作者：
Seidelin, S.
中科院分区：
文献类型：
--
作者：
Arcizet, O.;Jacques, V.;Seidelin, S.
我们定位一个单一的氮空位（NV）中心托管在金刚石纳米线的SiC纳米线的末端。这个新的混合系统耦合了两个完全不同的系统的自由度：纳米机械振荡器和单个量子物体。我们探测纳米谐振器的动力学通过时间分辨荧光和光子相关测量，传达的非经典光子发射器上的机械自由度的影响。此外，通过将系统浸入强磁场梯度中，我们诱导纳米机械振荡器和NV电子自旋之间的磁耦合，通过单个电子自旋提供纳米运动读出。这种耦合方案所固有的自旋相关力在原子物理学中使用的各种主动冷却和纠缠协议中是必不可少的，现在应该在纳米机械混合系统的范围内。
We position a single nitrogen-vacancy (NV) centre hosted in a diamond nanocrystal at the extremity of a SiC nanowire. This novel hybrid system couples the degrees of freedom of two radically different systems: a nanomechanical oscillator and a single quantum object. We probe the dynamics of the nano-resonator through time-resolved nanocrystal fluorescence and photon-correlation measurements, conveying the influence of a mechanical degree of freedom on a non-classical photon emitter. Moreover, by immersing the system in a strong magnetic field gradient, we induce a magnetic coupling between the nanomechanical oscillator and the NV electronic spin, providing nanomotion readout through a single electronic spin. Spin-dependent forces inherent to this coupling scheme are essential in a variety of active cooling and entanglement protocols used in atomic physics, and should now be within the reach of nanomechanical hybrid systems.