Photonic chips for QKD quantum security system
Toshiba Europe Ltd has developed what it claims is the world’s first quantum key distribution (QKD) system based on photonic chips.
Toshiba说，基于标准半导体工艺技术的芯片是量子安全技术大规模生产的基础，将其应用程序带入了包括物联网（IoT）（IoT）（IoT）的各种场景。
该技术的一部分是作为英国Aquasec项目与BT一起开发的，这是东芝拥有关键的量子网络滚动，而Kets量子技术（Bristol University of Bristol University of Bristol University of Bristol of Bristol of Bristol of Bristol of Bristol of Bristol of Bristol of Bristol of Bristol of Bristol of Bristol scip也已经开发了光子量子QKD芯片。
完整的QKD原型是具有量子光子芯片的首先具有不同功能的量子芯片，用于制备和测量量子的量子位以量子随机数发生器（qRNG）芯片生产，并实时转换为基于芯片QKD的高速调制模式使用现场编程的门阵列（FPGA）的发射器（QTX）和接收器（QRX）。
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“We are witnessing with photonic integrated circuits a similar revolution to that which occurred with electronic circuits. PICs are continuously serving more and more diverse applications,” said Taofiq Paraiso, lead author of the paper in Nature Photonics describing the chip-scale QKD system, Of course, the requirements for quantum PICs are more stringent than for conventional applications, but this work shows that a fully deployable chip-based QKD system is now attainable, marking the end of an important challenge for quantum technologies. This opens a wide-range of perspectives for the deployment of compact, plug-and-play quantum devices that will certainly strongly impact our society.”
使用快速门控单光子检测器检测光子。筛分，光子统计评估，时间同步和相位稳定是通过FPGA内核之间的10 GBIT/S光学连接完成的，从而在长时间内实现了自主操作。作为演示的一部分，芯片QKD系统与商业加密器连接，从而使数据传输允许最高100 GBIT/s的比特速率传输。
The QKD units are assembled in 1U rackmount cases. The QRx and QTx chips are packaged into C-form-factor-pluggable-2 (CFP2) modules to ensure forward compatibility of the system with successive QKD chip generations, making it easily upgradeable. Off-the-shelf 10 Gbit/s small-form-factor pluggable (SFP) modules are used for the public communication channels.
QKD地址wi的加密需求ll remain secure from attack by the quantum computers. The protocols used for quantum cryptography can be proven secure from first principles and will not be vulnerable to attack by a quantum computer, or indeed any computer in the future.
QKD市场预计将在2035财年在全球范围内增长约200亿美元，而东芝已经在剑桥建立了一家业务，以基于离散的光学组件制造QKD系统。欧洲和东南亚目前正在建设大型量子纤维网络，并且有计划推出可以将网络扩展到全球范围的卫星，而东芝已经实施了量子固定的地铁网络和长距离纤维纤维骨架英国，欧洲，美国和日本的链接。
The quantum transmitter chips developed by Toshiba measure just 2x6mm, allowing several hundred chips to be produced simultaneously on a wafer.
“光子集成将使我们能够以高度可重复的方式制造量子安全设备。这将使量子产品能够以较小的形式生产，然后将QKD从电信和DataCom网络的较大部分中脱颖而出。”东芝欧洲量子技术负责
东芝公司公司高级副总裁兼首席数字官Taro Shimada评论说：“东芝已在英国投资了二十年来，在英国投资了量子技术研发。这一最新进步非常重要，因为它将使我们能够以更大的数量制造和交付QKD。这是我们建立基于无处不在的量子安全设备的量子安全通信平台的愿景的重要里程碑。”
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