Quantum reservoir computing for efficient signal processing

QRC-4-ESP项目的长期愿景是生产世界上第一个基于超导量子比特和碳化硅缺陷量子比特的量子水库计算(QRC)系统。与传统的机器学习系统相比，这种新的颠覆性技术将在速度和功耗方面产生巨大的改进--两个或更多个数量级(&gt；100倍)。最终，这项技术将使开创性的微波范围、露天、量子通信和新的光学范围、光纤网络、量子传感器成为可能。由于其结构，超导量子比特自然在微波范围内(数百MHz至数十GHz)工作，这意味着它们与卫星通信所需的频率范围非常匹配，因为该频段的信号受雾和云的干扰最小。目前，由于强烈的背景热噪声，在这个范围内操作露天量子通信是困难的。然而，超导量子传感器的发展及其与超导QRC的集成可以通过允许常规使用成熟的量子密钥分发协议来解决这个问题。因此，量子卫星通信可以一劳永逸地成功部署，而不会有被拦截和解密的风险。SIC中基于缺陷的量子比特可以在几个频段工作，包括光学频段。在这里，我们特别感兴趣的是它们在近红外线的工作，这将使它们成为光纤网络的天然匹配。由于大气干扰，在光学范围内进行远程露天量子通信是不切实际的。然而，包括具有量子输入和输出的未来QRC设备作为量子中继器可以显著提高性能和降低成本。另一个应用将是将光学范围的量子传感器与图像处理QRC相结合，这将对医疗诊断非常有用。

The long-term vision of the QRC-4-ESP project is to produce the World’s first quantum reservoir computing (QRC) systems based on superconducting qubits and silicon carbide (SiC) defect qubits. This new disruptive technology will create drastic improvements in speed and reduction in power consumption – two or more orders of magnitude (>100X) - compared to classical machine learning systems. Ultimately, the technology will enable ground-breaking microwave range, open air, quantum communication and new optical range, fibre network, quantum sensors. Due to their structure, superconducting qubits naturally operate in the microwave range (hundreds of MHz to tens of GHz), which means they are well-matched to the required frequency range for satellite communications, because signals in this frequency band are minimally disturbed by fog and clouds. Currently, operating open-air quantum communications in this range is difficult due to strong background thermal noise. However, the development of superconducting quantum sensors and their integration with superconducting QRC could resolve this issue by enabling the routine use of well-developed quantum key distribution protocols. Thereby, quantum satellite communication could be successfully deployed - once and for all - without the risk of interception and decryption. Defect-based qubits in SiC can operate in several frequency bands, including the optical band. Here we are especially interested in their operation in the near-infrared, which would make them a natural match for fibre-optical networks. Long-range open-air quantum communication in the optical range is impractical due to atmospheric interference. However, the inclusion of prospective QRC devices - with quantum inputs and outputs - as quantum repeaters could significantly increase performance and reduce costs. Another application would be to integrate an optical-range quantum sensor with an image-processing QRC, which would be very useful for medical diagnostics.