超导-冷原子复合系统的研究进展

Research progress of superconductor and cold atoms hybrid quantum system

超导-冷原子复合系统因能够实现快速门操控、长寿命存储和光纤中长距离传输等特点,被认为是实现两台超导量子计算机光互联的最有潜力的复合体系之一.本文综述了近年来基于超导-冷原子复合系统实现两台超导量子计算机光互联的研究进展,包括超导芯片与冷原子相干耦合、微波光波相干转换和超导量子比特与量子转换器长程微波互联.对该复合量子系统的研究将为超导量子计算机之间的实用化光纤互联奠定物理和技术基础,有望在分布式超导量子计算机和杂化量子网络中获得广泛应用.

The hybrid quantum system composed of superconductor and cold atoms is expected to achieve fast quantum gates,long-life quantum storage and long-distance transmission through optical fibers,making it one of the most promising hybrid quantum systems to realize optical interconnection between two superconducting quantum computers.In this paper,we comprehensively review the recent research advancements in the optical interconnection of two superconducting quantum computers,based on the superconductor and cold atoms hybrid quantum system,specifically the review covers the coherent coupling between superconducting chips and cold atoms,the coherent microwave-to-optics conversion,and the long-range microwave interconnection between superconducting qubits and quantum converters.The system is expected to provide a physical and technical foundation for practical optical-fiber interconnection of two superconducting quantum computers,and have broad applications in distributed superconducting quantum computation and hybrid quantum networks.