单光子随机采样可轻松、精确地测量光信号,最高可达THz级别

作者 Helmut Fedder | 日期 16 May 2018

Single-photon random sampling - Swabian Instruments

单光子计数已在量子技术中得到了广泛的应用,例如量子感应、量子信息和量子通信。最近有人提出,低抖动单光子探测器可用于实现带宽远远超过100 GHz的光学随机取样范围,这是现有测量仪器无法达到的。该技术可用于研究锁模激光器和下一代电光设备,如EOM和VCSEL。此外,光学采样技术不需要在金属线上传输极快的电信号,后者会导致信号失真程度增加和高带宽信号衰减。 在Swabian Instruments的应用注释中,我们进行了一次原理证明演示测量,并描述了使用单光子雪崩探测器(SPAD)和超导纳米线单光子探测器(SNSPD)的SFP+模块。随着当前SNSPD的抖动达皮秒级别,该方法可保证测量带宽远超100 GHz。

更多相关技术细节,请查看应用注释

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