[Engadget] Google says it's achieved quantum supremacy

Google is standing by its claim that it's achieved quantum supremacy -- marking a major milestone in computing research. The company first made the claim back in September, and while disputed by competitors, Google's research paper has now been published in the scientific journal Nature.

Quantum supremacy is a big deal, because it encapsulates the ability of quantum computers to solve problems that current technology couldn't even begin to attempt. Google's paper explains how its 53-bit quantum computer -- named Sycamore -- took just 200 seconds to perform a calculation that would have taken the world's fastest supercomputer 10,000 years.

In theory, this capability opens a lot of doors to future technologies, such as designing better batteries and medicine, or minimizing emissions from farming chemicals. It could also help to advance existing technologies such as machine learning. However, Sycamore's feat has almost no practical use at this stage -- it was designed simply to show that a quantum computer could perform as expected.

Nonetheless, it's an important first step towards a technology that could have a major impact on our lives -- even if that's still some years away. In an interview with MIT Technology Review, Google CEO Sundar Pichai likened the experiment to the first flight by the Wright Brothers. "The first plane flew only for 12 seconds, and so there is no practical application of that," he said. "But it showed the possibility that a plane could fly."

https://www.engadget.com/2019/10/23/google-says-its-achieved-quantum-supremacy/?utm_campaign=homepage&utm_medium=internal&utm_source=dl

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Google says it's achieved quantum supremacy

Google is standing by its claim that it's achieved quantum supremacy -- marking a major milestone in ...
unfairness 發表於 23/10/2019 23:01

可以 0.00...001 槍打死人?  

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IBM 話宜家既 super computer 唔洗 10000 年
而係兩日幾都可以完成相同任務

考慮到通用性, 量子電腦仲有好長一段路要行

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IBM 話宜家既 super computer 唔洗 10000 年
而係兩日幾都可以完成相同任務

考慮到通用性, 量子電腦 ...
rabbit82047 發表於 2019-10-24 07:14

Super computer 要兩日幾
Quantum computer要200秒

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Terminator 2019: Dark Fate

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[經濟日報]200秒做1萬年工作 Google量子電腦遭IBM質疑

[經濟日報]200秒做1萬年工作 Google量子電腦遭IBM質疑
全文見: https://inews.hket.com/article/2 ... %E7%96%91?mtc=20042

Google宣佈成功研發量子電腦(quantum computer),號稱實現「量子霸權」。Google指,量子電腦能200秒內,完成傳統超級電腦要1萬年才能完成的運算工作。不過,IBM卻質疑Google誇大其辭,認為傳統超級電腦需時2.5天,就可完成與量子電腦同等的運算工作。

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由於量子位元可以同時為「0」和「1」,再配合量子疊加(superposition)、量子纏結(entanglement)的量子力學原理,讓量子位元在運算過程互相疊加,形成更多組合。因此,量子電腦能同時處理的數據比傳統電腦更多,從而提升運算速度。

然而,Google所指卻受到老牌電腦製造商IBM質疑。IBM稱,傳統超級電腦在硬碟儲存空間充足下,處理Google測試同等規模的計算,估計可能只需2.5天就能完成。

IBM研究員表示︰"若量子霸權是指做到傳統電腦不能完成的事,Google的量子電腦仍未實現量子霸權。"
(If quantum supremacy means doing something classical computers can't, this isn't it.)

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量子電腦咁勁,咁D加密貨幣咪奶哂野,好快就會解倒碼

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