IBM(IBM)宣布量子计算技术重大突破:首度成功连接并冷却模块化低温系统

金吾财讯
Aug 19

金吾财讯 | IBM(IBM)周三宣布一项重大技术突破:公司已成功将两个模块化低温量子系统连接,并在单一环境中实现极低温冷却。该架构通过全新的“L-耦合器”(L-coupler)技术,解决了将数百张量子芯片相连的技术瓶颈,标志着IBM在实现商业化容错量子计算的道路上迈出了关键一步。初始测试显示,这两个双模块系统(高与宽均超8英尺)在不到5天内即降温至4开尔文(液氦温度),随后进一步冷却至15毫开尔文(mK)以下,其环境温度比深空还要寒冷180倍以上。与IBM目前广泛使用的量子系统相比,新架构的每个真空封套提供了高达12倍的布线空间,大大增加了模块内部及模块之间的芯片连接能力。借由箱形(box-shaped)设计与“L-耦合器”技术,不同的量子芯片能够实现高效的信息共享与协同运行,构成更大规模的量子计算系统。据介绍,IBM计划于今年晚些时候在低温模块中安装“夜鹰”处理器,进一步开展实际性能测试。同时,借助L-耦合器技术,IBM拟将多个处理器连接成拥有至少1,000个可编程量子比特的超大系统。此外,该技术直接服务于IBM的“Starling”计划,目标是在2029年交付全球首台容错量子计算机。届时,每个低温模块预计可容纳数千个量子比特。

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