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arXiv 1809.01645quant-phphysics.atom-phphysics.optics
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级联腔耦合耗散辐射的不可分辨单光子源

Indistinguishable Single-Photon Sources with Dissipative Emitter Coupled to Cascaded Cavities

Hyeongrak Choi, Di Zhu, Yoseob Yoon, Dirk Englund

摘要:

最近,Grange等人[Phys. Rev. Lett. 114,193601(2015)]显示了从量子发射体产生具有高不可逆性的单光子的可能性,尽管存在强的纯退相,但通过“funerals”发射到光子腔中。在这里,我们表明,级联双腔系统可以进一步改善光子特性,并大大降低Q因子的要求,以目前的技术可以实现的水平。我们的方法利用了超小模体积纳米腔的最新进展,并且不需要发射器的超快激发。这些结果是通过数值和封闭形式的分析模型与强发射体退相,代表室温量子发射体。

英文摘要:

Recently, Grange et al. [Phys. Rev. Lett. 114, 193601 (2015)] showed the possibility of single photon generation with high indistinguishability from a quantum emitter, despite strong pure dephasing, by `funneling' emission into a photonic cavity. Here, we show that cascaded two-cavity system can further improve the photon characteristics and greatly reduce the Q-factor requirement to levels achievable with present-day technology. Our approach leverages recent advances in nanocavities with ultrasmall mode volume and does not require ultrafast excitation of the emitter. These results were obtained by numerical and closed-form analytical models with strong emitter dephasing, representing room-temperature quantum emitters.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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