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arXiv 1311.3000quant-phphysics.optics
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一种片上耦合谐振腔光波导单光子缓冲器

An on-chip coupled resonator optical waveguide single-photon buffer

Hiroki Takesue, Nobuyuki Matsuda, Eiichi Kuramochi, William J. Munro, Masaya Notomi

摘要:

集成量子光路是实现单光子量子信息处理的最有前途的途径之一。这种电路的许多核心元件已经实现,包括源、门和检测器。然而,片上光子信息处理所必需的一个重要的缺失功能是缓冲器,其中单个光子存储很短的时间以促进电路同步。本文报道了一种基于400个高Q值光子晶体线缺陷纳米腔的耦合谐振腔光波导的片上单光子缓冲器。通过使用CROW,脉冲单光子被成功地缓冲了150 ps,50 ps的可调谐性,同时保持其非经典特性。此外,我们还证明了我们的缓冲区通过从时间仓纠缠态中存储和取回一个光子来保持纠缠。这是迈向全光集成量子信息处理器的重要一步。

英文摘要:

Integrated quantum optical circuits are now seen as one of the most promising approaches with which to realize single photon quantum information processing. Many of the core elements for such circuits have been realized including sources, gates and detectors. However, a significant missing function necessary for photonic information processing on-chip is a buffer, where single photons are stored for a short period of time to facilitate circuit synchronization. Here we report an on-chip single photon buffer based on coupled resonator optical waveguides (CROW) consisting of 400 high-Q photonic crystal line defect nanocavities. By using the CROW, a pulsed single photon was successfully buffered for 150 ps with 50-ps tunability while maintaining its non-classical properties. Furthermore, we showed that our buffer preserves entanglement by storing and retrieving one photon from a time-bin entangled state. This is a significant step towards an all-optical integrated quantum information processor.

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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