High quantum-efficiency photon-number-resolving detector for photon icon-chip information processing
High quantum-efficiency photon-number-resolving detector for photon icon-chip information processing
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DOI：
10.1364/oe.21.022657
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发表时间：
2013-09-23
期刊：
影响因子：
3.8
通讯作者：
Nam, Sae Woo
中科院分区：
文献类型：
--
作者：
Calkins, Brice;Mennea, Paolo L.;Nam, Sae Woo
集成光路是实现复杂量子光态和信息网络的一种很有前途的结构。这些应用中的许多应用所需的一个元件是能够区分光子数的高效光子检测器。我们提出了一个集成的光子系统，在电信波段在1550 nm的基础上紫外写入硅基二氧化硅波导和修改过渡边缘传感器能够数分辨率和超过40%的效率。利用这些器件的模式传输故障，我们将三个检测器串联复用，以证明单次通过的组合检测效率为79%+/-2%，并且在片上终端反射光栅的工作波长处为88%+/-3%。此外，我们的光学测量清楚地表明，由于散射或反射，该系统中没有明显的不明原因的损失。因此，这种波导和探测器设计允许在光子电路内的任意位置放置具有可预测效率的数分辨单光子探测器-这一能力为许多量子光学应用提供了巨大的潜力。
The integrated optical circuit is a promising architecture for the realization of complex quantum optical states and information networks. One element that is required for many of these applications is a high-efficiency photon detector capable of photon-number discrimination. We present an integrated photonic system in the telecom band at 1550 nm based on UV-written silica-on-silicon waveguides and modified transition-edge sensors capable of number resolution and over 40 % efficiency. Exploiting the mode transmission failure of these devices, we multiplex three detectors in series to demonstrate a combined 79 % +/- 2 % detection efficiency with a single pass, and 88 % +/- 3 % at the operating wavelength of an on-chip terminal reflection grating. Furthermore, our optical measurements clearly demonstrate no significant unexplained loss in this system due to scattering or reflections. This waveguide and detector design therefore allows the placement of number-resolving single-photon detectors of predictable efficiency at arbitrary locations within a photonic circuit - a capability that offers great potential for many quantum optical applications.