Integrated Source of Spectrally Filtered Correlated Photons for Large-Scale Quantum Photonic Systems
Integrated Source of Spectrally Filtered Correlated Photons for Large-Scale Quantum Photonic Systems
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DOI：
10.1103/physrevx.4.041047
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发表时间：
2014-12-19
影响因子：
12.5
通讯作者：
Galland, Christophe
中科院分区：
文献类型：
--
作者：
Harris, Nicholas C.;Grassani, Davide;Galland, Christophe
我们证明了量子相关光子对的产生结合了超过95 dB的抽运场的光谱滤波在一个单一的硅芯片上使用电可调环形谐振器和无源布拉格反射器。此外，我们执行信号和空闲光子的解复用和路由后，通过光纤将它们传输到第二个相同的芯片。非经典的双光子时间相关性的巧合，以偶然的比率为50的测量没有进一步的芯片外过滤。我们的系统在CMOS兼容工艺中以高产率和可重复性制造，通过允许将单光子的源和检测器集成在同一芯片上，为大规模量子光子电路铺平了道路。
We demonstrate the generation of quantum-correlated photon pairs combined with the spectral filtering of the pump field by more than 95 dB on a single silicon chip using electrically tunable ring resonators and passive Bragg reflectors. Moreover, we perform the demultiplexing and routing of signal and idler photons after transferring them via an optical fiber to a second identical chip. Nonclassical two-photon temporal correlations with a coincidence-to-accidental ratio of 50 are measured without further off-chip filtering. Our system, fabricated with high yield and reproducibility in a CMOS-compatible process, paves the way toward large-scale quantum photonic circuits by allowing sources and detectors of single photons to be integrated on the same chip.