第385章 当偶像压力好大(1 / 2)

赵楷是量子计算领域顶尖专家,问题列的很细:

“首先,即便不考虑量子云,量子计算本身也存在几个瓶颈……”

“第一,量子比特很不稳定,容易受温度波动、电磁噪声等环境干扰,导致量子相干态只能保持很短时间”

“也就是说,计算时间有限”

“量子比特规模要求高时,只能用超导方式,计算时间是微秒级”

王霁有些吃惊:“赵老师,我记得九章5号就能持续计算啊?”

去年解决数据局问题时,就听说过,九章5号能用来破译密钥

这事是机密,王霁只点了一嘴,没说出具体经历

赵楷摇摇头:

“只有特定算法能做到”

“我们实验室一大成果,就是优化了某几类算法,能用于连续计算”

“实际上,走的是取巧方式,不足以复制到通用领域”

王霁哦了一声,内心很是失望

他对量子计算了解不深,但其中原理、限制还是做了功课的

由于量子退相干问题,普遍认为量子计算机无法持续计算,但他听说九章5号能做到,因此多少带着希望来的

如果九章5号都做不到,这个想法已经可以宣告流产了

赵楷看出他的表情,笑道:“你先听我说完,咱们再聊方案”

继续刚才的讲述:

“第二个问题,是硬件限制”

“由于工艺原因,目前只能做到100这个数量级的量子比特”

“你们想要做量子云,肯定是希望规模更大,可是现在做不到”

“第三个问题,是生态”

“用量子计算机解决问题,不能按传统软件的方式来写代码”

“有特定的量子计算库、代码写法跟传统范式有明显差距”

“编程语言、开发工具链都不成熟,缺乏标准化api接口,只有少数实验室能用,商用的话门槛非常高……”

听到这里,王霁又叹了口气

往胡嘉怡那边望去,两人对视一眼,都摇摇头

做平台的人都知道,生态如果建不起来、门槛高,是很难吸引到客户的

例如芯片、操作系统,并非只做出产品就行,关键得有上层生态

只有大家都认芯片指令集和架构,芯片才会有人使用

只有大家都认操作系统的用户规模、编程接口,操作系统才能推广

因此,国产化才这么难

跟国外成熟芯片、操作系统相比,技术关好过,生态关难过

不止要证明自己技术行,还得说服别人跟你一起玩,太难了!

赵楷继续分享量子云的难点:

“第四个问题,是成本”

“建一个量子计算中心,即便不考虑芯片,也需要至少几个亿的投资”

“而且,还要搭配一套工程师团队去维护、支付专利授权费”

“懂量子计算的工程师,那都是高级人才,动不动就上百万年薪的”

“电费什么的就不说了”

“超导环境需要很高电量,需要申请工业用电特殊支持”

ppt终于翻到最后:

“第五个问题,是集成”

“有些计算需求适合用传统架构,有些适合用量子计算,大任务如何协同、调度,是一个框架性挑战”

“目前的量子云没有解决这个问题,所以,没法扩大客户群”

赵楷讲完问题,问王霁:“说实话,你怎么想到搞量子云的?”

王霁苦笑道:“其实是想了解下,有没有机会做个杀手锏产品”

赵楷微微一笑:

“想法很好!”

“只是,光靠腾云很难实现”

“加上我们实验室,也很难实现”

“尤其是生态问题,真不是单个企业、单个实验室能做到的”

“要么有个企业率先搞出了一套工具链,技术遥遥领先,有绝对先发优势”

“要么就得国家振臂一呼,号召大批企业、研究所一起攻关……”

“总之,技术还不成熟,你们想搞量子云,我是有所保留的”

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